RE: BMW 6 Series (E63): PH Buying Guide

RE: BMW 6 Series (E63): PH Buying Guide

Author
Discussion

quavey

177 posts

154 months

Monday 3rd October 2016
quotequote all
Fox- said:
Yes - that's right - its my input. Because it comes up time and time again, usually from V8 owners. Claims, usually based on anecdotes, that the V8's are as fuel efficient as the 6 cylinder engines. It's just not true, its man maths at its finest and it gets misleading when people ask for genuine advice. There are many great things about the V8, but 6 pot efficiency is simply not one of them. It's the same with the 5 Series as well.

The V8's are more thirsty than the 6 pots. If they were not then they'd have almost identical combined consumption figures (No matter what you can, rightly, say about the NEDC testing methodology, the one thing it does offer is consistency between models in the same range) and they don't, they are miles apart. Look on, say, Spritmonitor.de and you'll notice the average for the 630i is 27mpg and the V8 is 22mpg. It's near enough 20% more efficient!

I'd often touch 40mpg in my 6 cylinder 5 Series, a V8 would get nowhere near. I never saw 15mpg over a tank, V8 owners often do.

Whether or not the V8 is worth the extra fuel cost is of course a completely different story - you could very well argue that it's worth the extra - but honestly, can we stop with the ridiculous myth that a 4.4 litre V8 uses the same amount of fuel as a 3 litre Six? Especially when you consider that BMW petrol six cylinder engines are amongst the most efficient on the market anyway.

Rant over.

Edited by Fox- on Monday 3rd October 21:34
I'll not argue that the 630i can be more efficient, I was referring to the real world. My long term average from the 650i is just shy of 27mpg, the 630i owner's real world was 28mpg.

However the real point I was trying to make is that the E63/4 needs to be a V8 to get the best from the car and it suits the character of the car superbly. The 3.0 6 pot does not offer a worthwhile economy benefit over the V8's especially when there is the oil burner to fullfill that role.

the_hood

771 posts

196 months

Monday 3rd October 2016
quotequote all
RDMcG said:
the_hood said:
Would be interested to hear more.
The 645 had some things I loved about it. Firstly I specced it as a manual which was not a common option apparently, and I loved the sound of the V8. From a driver's point of view it was quick enough, though I found the clutch not as nice as my previous E39 M5...it was very binary. Hated the run flats and changed them out for regular Michelins which transformed the car.






The M6 was an exclusive edition car and beautifully finished inside with gorgeous full leather. The engine was amazing but only if you could find somewhere to use it and had no V8 rumble. Lots has been written about SMG. Suffice it to say that it was awful as an auto, but if you learned to do a micro lift on upshift you could use it very smoothly. It was too heavy for a track and underbraked for the purpose..I ran it at a couple of tracks in Germany including the Nürburgring and it was just not the right car for that activity.

On an autobahn the thing was mind-blowing....my vid vid here flat out. Engine sounds great if you can get the rev right up there.....

https://www.youtube.com/watch?v=TTMKkPxei0I
Thanks. I've only had a short blast in a M6 in the wet, which wasn't ideal. I still enjoyed it though.

CS Garth

2,861 posts

107 months

Monday 3rd October 2016
quotequote all
Fox- said:
CS Garth said:
The bloke had just contributed very positively to an interesting thread and that is your input? Really?
Yes - that's right - its my input. Because it comes up time and time again, usually from V8 owners. Claims, usually based on anecdotes, that the V8's are as fuel efficient as the 6 cylinder engines. It's just not true, its man maths at its finest and it gets misleading when people ask for genuine advice. There are many great things about the V8, but 6 pot efficiency is simply not one of them. It's the same with the 5 Series as well.

The V8's are more thirsty than the 6 pots. If they were not then they'd have almost identical combined consumption figures (No matter what you can, rightly, say about the NEDC testing methodology, the one thing it does offer is consistency between models in the same range) and they don't, they are miles apart. Look on, say, Spritmonitor.de and you'll notice the average for the 630i is 27mpg and the V8 is 22mpg. It's near enough 20% more efficient!

I'd often touch 40mpg in my 6 cylinder 5 Series, a V8 would get nowhere near. I never saw 15mpg over a tank, V8 owners often do.

Whether or not the V8 is worth the extra fuel cost is of course a completely different story - you could very well argue that it's worth the extra - but honestly, can we stop with the ridiculous myth that a 4.4 litre V8 uses the same amount of fuel as a 3 litre Six? Especially when you consider that BMW petrol six cylinder engines are amongst the most efficient on the market anyway.

There is absolutely a credible case to made for purchasing a 630i.

Remember of course the entire reason BMW introduced the N54 engine was to offer V8 power and performance but 6 cylinder efficiency. Perhaps they should have popped on here first because apparently the V8 already offered 6 cylinder efficiency, what a waste of time it was developing that turbo six! hehe

Edited by Fox- on Monday 3rd October 21:37
A very well written and comprehensive response - not sure it changes our man's subjective experience but it certainly puts your case more eloquently!

Fox-

13,263 posts

248 months

Monday 3rd October 2016
quotequote all
quavey said:
I'll not argue that the 630i can be more efficient, I was referring to the real world. My long term average from the 650i is just shy of 27mpg, the 630i owner's real world was 28mpg.
To average 27mpg out of a 650i means you must have been doing primarily long trips - which is not a typical usage profile and probably different to the 630i you compared it with. Over the last 2 years I averaged 34mpg in an F10 530d, which shows the danger of using an average like that to compare efficiency with other people - using the same sort of theory we'd arrive at the conclusion that a 650i is almost as economical as a 530d which is clearly not true tongue out

I suspect had you borrowed your friends 630i for a month and driven it exactly how you did your 650i you'd have been doing rather more than 28mpg in it hehe

quavey said:
However the real point I was trying to make is that the E63/4 needs to be a V8 to get the best from the car and it suits the character of the car superbly.
This is a completely different point - with which I'd not necessarily disagree. It is absolutely a different car with the V8. The question is, what sort of car do you want? The 630i offers a smooth, quiet and efficient distance coverer whereas the V8 offers a high performance coupe.

Edited by Fox- on Monday 3rd October 21:47

quavey

177 posts

154 months

Monday 3rd October 2016
quotequote all
Fox- said:
To average 27mpg out of a 650i means you must have been doing primarily long trips - which is not a typical usage profile and probably different to the 630i you compared it with. Over the last 2 years I averaged 34mpg in an F10 530d, which shows the danger of using an average like that to compare efficiency with other people - using the same sort of theory we'd arrive at the conclusion that a 650i is almost as economical as a 530d which is clearly not true tongue out

I suspect had you borrowed your friends 630i for a month and driven it exactly how you did your 650i you'd have been doing rather more than 28mpg in it hehe
Fair point, I am generally quite an economical driver so it probably warps my opinion on these things. But anyway, this is PH... V8 all the way. Even if just for the noise smile

Vroom101

828 posts

135 months

Monday 3rd October 2016
quotequote all
Ekona said:
Absolutely love mine, had it 18 months now and still enjoy it as much as I ever did. 645ci, manual gearbox, pretty much nothing in the way of options so less to go wrong! I've done the valve stem seals using the AGA tool, replaced all the dampers & springs with BC Racing gear, new H&R ARBs fitted, new clutch and flywheel, brakes all round (now available from BMW as a value pack, so more like £500 than the £1000 mentioned in the article), M Sport gearknob which transformed the shift feel, and I'm in the process of fitting Recaro Pole Position seats too.

Oh yeah, and it'll not in resale silver any more either...



Most people seem to be 50/50 love/loathe over it, but I'm 100% happy with it so I reckon that's all that matters smile
If someone had tried to describe a bright orange Six Series with a big f*ck-off rear wing and after-market alloys, I'd have recoiled in horror. But I actually think that's really rather striking thumbup

Is there a Reader's Car entry anywhere? It's not mentioned in your profile.


Jiebo

911 posts

98 months

Monday 3rd October 2016
quotequote all
Had a 2005 645i auto for a while. I bought this one over the 650i because the tax was cheaper due to the year.

I live in London and do mostly cold stop-start urban driving, with the very occasional motorway trip. I used to get 13mpg in the summer and 9mpg in the winter.

Single digits mpg is not a fun experience considering I'm going with the normal traffic the Uber Prius next to me probably hitting 50mpg.

It didn't even sound that good, or handle very well. There is a reason these are cheap!


I've now grown out of the big engine thing and take the tube or walk. If I need a car I use the zipcar on my road. I'm saving thousands a year..

Edited by Jiebo on Monday 3rd October 23:20

alpinab3

204 posts

191 months

Monday 3rd October 2016
quotequote all
N52s can suffer from camshaft carrier ledge wear which is major £££ to repair. These engines are getting old and they are very complicated with valvtronic crap.

shalmaneser

5,944 posts

197 months

Tuesday 4th October 2016
quotequote all
Jiebo said:
Had a 2005 645i auto for a while. I bought this one over the 650i because the tax was cheaper due to the year.

I live in London and do mostly cold stop-start urban driving, with the very occasional motorway trip. I used to get 13mpg in the summer and 9mpg in the winter.

Single digits mpg is not a fun experience considering I'm going with the normal traffic the Uber Prius next to me probably hitting 50mpg.

It didn't even sound that good, or handle very well. There is a reason these are cheap!


I've now grown out of the big engine thing and take the tube or walk. If I need a car I use the zipcar on my road. I'm saving thousands a year..

Edited by Jiebo on Monday 3rd October 23:20
Maybe just keep the big BM and use the car or walk as well? That way you don't have to tool around in a hateful zipcar...

I get roughly 20mpg driving my M3 around London and it's a hateful experience. Hence I cycle to work every day which is much more fun!

Then I have the M3 for weekends and holidays.

Why would you get better MPG in the summer rather than the winter? Were your trips so short that the car was running rich trying to warm itself up?

Are you sure you're on the right site?

Ekona

1,656 posts

204 months

Tuesday 4th October 2016
quotequote all
Vroom101 said:
Ekona said:
Absolutely love mine, had it 18 months now and still enjoy it as much as I ever did. 645ci, manual gearbox, pretty much nothing in the way of options so less to go wrong! I've done the valve stem seals using the AGA tool, replaced all the dampers & springs with BC Racing gear, new H&R ARBs fitted, new clutch and flywheel, brakes all round (now available from BMW as a value pack, so more like £500 than the £1000 mentioned in the article), M Sport gearknob which transformed the shift feel, and I'm in the process of fitting Recaro Pole Position seats too.

Oh yeah, and it'll not in resale silver any more either...



Most people seem to be 50/50 love/loathe over it, but I'm 100% happy with it so I reckon that's all that matters smile
If someone had tried to describe a bright orange Six Series with a big f*ck-off rear wing and after-market alloys, I'd have recoiled in horror. But I actually think that's really rather striking thumbup

Is there a Reader's Car entry anywhere? It's not mentioned in your profile.
Thanks for the comments, much appreciated smile I've not done a Reader's Car thread yet, I was waiting until I get the seats done and then I'll do a proper one I think.

But yeah, I agree that it's definitely not the kind of car that lends itself to the wilder side of the modifying spectrum at all. Still, midlife crisis as I'm approaching 40 and all that...

Ares

11,000 posts

122 months

Tuesday 4th October 2016
quotequote all
CS Garth said:
Fox- said:
CS Garth said:
The bloke had just contributed very positively to an interesting thread and that is your input? Really?
Yes - that's right - its my input. Because it comes up time and time again, usually from V8 owners. Claims, usually based on anecdotes, that the V8's are as fuel efficient as the 6 cylinder engines. It's just not true, its man maths at its finest and it gets misleading when people ask for genuine advice. There are many great things about the V8, but 6 pot efficiency is simply not one of them. It's the same with the 5 Series as well.

The V8's are more thirsty than the 6 pots. If they were not then they'd have almost identical combined consumption figures (No matter what you can, rightly, say about the NEDC testing methodology, the one thing it does offer is consistency between models in the same range) and they don't, they are miles apart. Look on, say, Spritmonitor.de and you'll notice the average for the 630i is 27mpg and the V8 is 22mpg. It's near enough 20% more efficient!

I'd often touch 40mpg in my 6 cylinder 5 Series, a V8 would get nowhere near. I never saw 15mpg over a tank, V8 owners often do.

Whether or not the V8 is worth the extra fuel cost is of course a completely different story - you could very well argue that it's worth the extra - but honestly, can we stop with the ridiculous myth that a 4.4 litre V8 uses the same amount of fuel as a 3 litre Six? Especially when you consider that BMW petrol six cylinder engines are amongst the most efficient on the market anyway.

There is absolutely a credible case to made for purchasing a 630i.

Remember of course the entire reason BMW introduced the N54 engine was to offer V8 power and performance but 6 cylinder efficiency. Perhaps they should have popped on here first because apparently the V8 already offered 6 cylinder efficiency, what a waste of time it was developing that turbo six! hehe

Edited by Fox- on Monday 3rd October 21:37
A very well written and comprehensive response - not sure it changes our man's subjective experience but it certainly puts your case more eloquently!
I get where he comes from though. Person one getting XX mpg comparing it with person two getting YY mpg is not an accurate balance. My old man averages high-60s mpg in his 320d. My next door neighbour's wife averages late 30s mpg in her Audi A1. Do we therefore think the 320d, despite being a lot heavier, is c70% more fuel efficient than a little A1?

Or could driving style be a very large part of it?

Vroom101

828 posts

135 months

Tuesday 4th October 2016
quotequote all
Ekona said:
Vroom101 said:
Ekona said:
Oh yeah, and it'll not in resale silver any more either...



Most people seem to be 50/50 love/loathe over it, but I'm 100% happy with it so I reckon that's all that matters smile
If someone had tried to describe a bright orange Six Series with a big f*ck-off rear wing and after-market alloys, I'd have recoiled in horror. But I actually think that's really rather striking thumbup

Is there a Reader's Car entry anywhere? It's not mentioned in your profile.
Thanks for the comments, much appreciated smile I've not done a Reader's Car thread yet, I was waiting until I get the seats done and then I'll do a proper one I think.

But yeah, I agree that it's definitely not the kind of car that lends itself to the wilder side of the modifying spectrum at all. Still, midlife crisis as I'm approaching 40 and all that...
Well hurry up and sort those seats out - I want to hear more about it biggrin It looks like like the b*stard offspring of some German touring car race series. cool

PaulJC84

928 posts

219 months

Tuesday 4th October 2016
quotequote all
I always think these look like a lot of car for the money.

Its a shame the later 630i has a few issues, so I take it the 650i is the one to go for for reliability.

volvos60s60

567 posts

216 months

Tuesday 4th October 2016
quotequote all
I had a 645Ci 'vert for a year or so.

It was a pretty good car but very prone to warning lights coming on & all sorts of failure messages, often one after the other. I finally got to the bottom of it - these cars are very sensitive to getting exactly the correct voltage from the battery & there is a device which increases the alternator output as the battery ages to compensate, hence with a new battery it must be coded to the vehicle.
BMW wanted to sell me a new alternator at a huge price (can't remember exactly but £1500 fitted rings a bell). In the end I got a new voltage regulator for £70 from Ebay US (can't buy it separately to the alternator in the UK) & got my mechanic to fit it for £75. There is a way, via the trip meter button of getting the dash to display the output voltage at any given time - googling will give you the procedure. Suddenly all problems gone & the car behaved itself - generally.

It did develop a further problem of rough running on start up in cold weather, but turning off & on did reset something & it was okay again, but I got rid before it got worse.

Auto gearboxes can give a jolt on moving off, this is often a sign of the valvetronics device playing up (electric/hydraulic solenoid module which has a happy knack of letting hydraulic fluid into the electrics) - best bet is a rebuilt valvetronics unit which is less than £1000 fitted. Fortunately for me, a gearbox reset did the trick - easy to do it you follow the right sequence of button pushing on the controls & depressing one of the pedals at the same time. Gearbox oil change also might help.

All sounds like a horror story, but it is not, it is a nice car but can be expensive to fix. I recommend doing a diagnostoc using an OBD reader before parting with your money - it could be wothwhile.

Mine would do 30 mpg on a run if driven gently, 25 if driving harder. I did 3000 miles to the South of France without issue once I'd sorted it. Not much better for cruising on the Cote D'Azur.....

greghm

440 posts

103 months

Tuesday 4th October 2016
quotequote all
I was waiting for this buying guide although I already bought mine a year ago.

Design: it might be one of these cars that get as much hate as love from people. I used to totally hate it in the 2000's ... but then I slowly changed my opinion to the point that I think Bangle (sounds eloquent when using his last name like he is a buddy) was in fact ahead of his time.
I still remember Clarkson's comment about this car like "if you visit some friends, make sure you are leaving by reversing so they don't see the back of your car [...] they probably had two designers not talking to each others. One for the front and another for the back.
I now find that car in fact more appealing than the new one which I find has less character.

mpg: no interest as my opinion is that sport cars or cruisers should never be Diesel. Did 25 mpg at 90 mph from Scotland to London.

sound & acceleration: these two go together and they are really the best thing about this car. Any V8 lover would agree.

misc True that there is not much room in the back but you can do 100s of miles by advancing a bit your seat at the front.
The boot is huge.

issues:
-Soft top sensors. It is true, it happens for these cars from 2004 and 2005 and I had it from day one... And there is a trick, known on internet to fix it... I did not believe it! If you test to buy one, ask to have the soft top open and closed several times.
-Cracked wheels: common problem for these cars. That is annoying but that is how BMW managed to not have a spare wheel in the boot.
-Transmission fault: it does seem that it needs to be changed. I have 94k miles and had a warning.


Jiebo

911 posts

98 months

Tuesday 4th October 2016
quotequote all
shalmaneser said:
Maybe just keep the big BM and use the car or walk as well? That way you don't have to tool around in a hateful zipcar...

I get roughly 20mpg driving my M3 around London and it's a hateful experience. Hence I cycle to work every day which is much more fun!

Then I have the M3 for weekends and holidays.

Why would you get better MPG in the summer rather than the winter? Were your trips so short that the car was running rich trying to warm itself up?

Are you sure you're on the right site?
I've always been a petrol head, but tbh since moving to London 8 years a go driving has just become a chore. It takes me over an hour to get out of the M25 and by then I've had enough of driving and want to jump on the train to get to my destination.

The differential between summer and winter economy is pretty normal in all cars. But the trips were short <10 miles horrid stop and start London driving, so it never managed to warm up. Plus when I did drive it, I had a very heavy foot as it's a performance car and needed to justify the cost somehow.

It a long distance cruiser at heart and would suit many people. It's a terrible car for short distance town usage because the economy is shocking and doesn't feel nimble. All the people saying its hitting 30mpg is extra-urban motorway driving - as soon at you hit traffic you will get 15 if you're lucky, which these days isn't acceptable for most.

Edited by Jiebo on Tuesday 4th October 18:21

Matt UK

17,776 posts

202 months

Tuesday 4th October 2016
quotequote all
To my eyes an incredibly ugly car from all angles. In a world where the Jaguar XK exists, this era 6er wouldn't get a look in if I fancied a V8 coupe.

smile

cerb4.5lee

31,052 posts

182 months

Tuesday 4th October 2016
quotequote all
Matt UK said:
To my eyes an incredibly ugly car from all angles.
Agree and I've had a few Bangle designed BMW's and they've all been ugly, but along with the 7 series he designed this 6 series is the worst.

I appreciate current BMW's are very generic looking now, but I'm glad Bangle has gone because I genuinely think he was as blind as a bat.

chezgilo

76 posts

217 months

Wednesday 5th October 2016
quotequote all


This is my 630. It's a 2007 with about 100k on the clock. It was my fathers from about 8k and then passed onto me at about 70k, so it's been in the family for a while. It's immaculate and has been very much enjoyed. It's not my car of choice but not much else comes close for the value if you want a luxurious, sophisticated and powerful ride with super build quality.

It feels like a complete lazy lump when not in sport mode or manual mode but at least that option is there for keeping the fuel consumption down around town. I drive it mostly in manual mode - flicking the tiptronic gear knob up and down which makes for instant acceleration and makes the car feel lighter than it is. It is also a very relaxing car to drive.

After this many miles everything still feels like new, such is the high quality. The steering is beautifully weighted and the brakes are excellent. Road holding isn't amazing but then it's not a sports car. The 6 cylinder engine revs very high when keeping the pedal down in sport mode until the car decides to change gear - to the point where it is actually pretty entertaining. Taking it through a tunnel and pushing it in 2nd and 3rd gears makes it produce a really great sound - so much so that it's hard to resist putting the windows down and making some noise.

For the price of a good lunch, some clever research and a bit of luck I've managed to hook up my iPhone SE to play Spotify app offline through the stereo and even managed to find a phone cradle that sticks to the sloping dash in the perfect place for easy operation. Hiding all the cables was a challenge but I've done a great job. The iDrive makes changing between iPhone music and the radio easy whilst on the move but overall I find the iDrive to be pretty non intuitive (I still can't figure out how to turn the sat nav off and it only allows the first part of the post code so you get to the general destination but not to 'the' destination).

All the controls fall to hand nicely and everything feels very good quality. The interior really is a very nice place to be. The seats are super comfy and supportive. Passengers fall asleep easily on long journeys.

It's in a different league to my previous Audi A4 (2004) in both quality and performance (both being 6 cylinder 3 litres).

The boot is a decent size and the passenger space in the back is OK - I've taken 4 up many times but 30mins is about the max before they start to complain. Most of the space is devoted to the driver and passenger which is lots.

There's only been one minor problem in the whole family ownership which is with the passenger seat sensor needing to be replaced which was a quick and relatively cheap job.

I haven't seen another 6 in a better looking colour combination, but then I guess I would say that. We all do!

Overall it's been a great car.

Oh and I actually really like the rear end. (It's the front that went a bit wrong). And I'm a designer so I must be right wink

Edited by chezgilo on Wednesday 5th October 00:42


Edited by chezgilo on Wednesday 5th October 09:42

Speed addicted

5,598 posts

229 months

Wednesday 5th October 2016
quotequote all
I have a 2005 645 coupe. I tend to prefer big lazy engines and this is perfect for me.

I've liked the looks since they were launched and I prefer it to the current model.

58k miles and 11 years old but still feels fresh with no rattles, its fast enough for everything I've wanted so far and handles just fine now the horrible run flats have been changed to normal tyres.

I've had it 18 months, bought as my austerity car due to concerns about the oil industry tanking and the worry of a £530 per month pcp on my previous car. Now the 6 series has hit break even for costs.

I've had some oil leaks from the rocker covers fixed and the plastic gearbox sump replaced.

To be honest I don't know what I'd replace it with, I normally keep cars about two years but have no plans to move on in the near future.





Edited by Speed addicted on Wednesday 5th October 15:24