Moving from a petrol to diesel
Discussion
Hey guys,
Got any tips for moving to a diesel engine?
It appears that my new diesel is most efficient around 1200 revs, but that seems ridiculously low to me, especially when I need to accelerate. I can't get very decent figures at much higher revs than that though, around 10-15mpg LESS at 1500 revs.
Got any tips for moving to a diesel engine?
It appears that my new diesel is most efficient around 1200 revs, but that seems ridiculously low to me, especially when I need to accelerate. I can't get very decent figures at much higher revs than that though, around 10-15mpg LESS at 1500 revs.
xreyuk said:
Hey guys,
Got any tips for moving to a diesel engine?
It appears that my new diesel is most efficient around 1200 revs, but that seems ridiculously low to me, especially when I need to accelerate. I can't get very decent figures at much higher revs than that though, around 10-15mpg LESS at 1500 revs.
That's because at 1200rpm the engine is off boost and uses much less fuel. Got any tips for moving to a diesel engine?
It appears that my new diesel is most efficient around 1200 revs, but that seems ridiculously low to me, especially when I need to accelerate. I can't get very decent figures at much higher revs than that though, around 10-15mpg LESS at 1500 revs.
I resorted to granny driving in the van today and finally managed to get into the 30s. I've been getting low to mid 20s most of the time. 65 miles, 30.2mpg.
Could do with that improving as I run it in (on 2k miles at the moment)!
The usually stuff applies - stick below 3k rpm and drive slowly!
Could do with that improving as I run it in (on 2k miles at the moment)!
The usually stuff applies - stick below 3k rpm and drive slowly!
Seat Leon 1.6TDI Ecomotive.
I managed 60mpg average on a 70 mile trip today with half city, half motorway driving. I barely went above 1200 revs when reaching a constant speed though, I was doing 55-60mph on the motorway for christ sake. Driving like that, I would have expected a little higher, seeing as I used to have a heavy foot in my 1.2L Petrol Corsa and could still get 40mpg. Driving the same way in the car as the Corsa is only getting me 45-50mpg
The car is rated for 74mpg combined, and 83mpg motorway, and I know I'll never hit those, just would have thought it would have been a little higher.
Strangely the MPG was better at 30-40mph than at 60mph.
The car has 3700 miles on it and has been in my possession 5 days.
I managed 60mpg average on a 70 mile trip today with half city, half motorway driving. I barely went above 1200 revs when reaching a constant speed though, I was doing 55-60mph on the motorway for christ sake. Driving like that, I would have expected a little higher, seeing as I used to have a heavy foot in my 1.2L Petrol Corsa and could still get 40mpg. Driving the same way in the car as the Corsa is only getting me 45-50mpg
The car is rated for 74mpg combined, and 83mpg motorway, and I know I'll never hit those, just would have thought it would have been a little higher.
Strangely the MPG was better at 30-40mph than at 60mph.
The car has 3700 miles on it and has been in my possession 5 days.
xreyuk said:
Ahh, cheers for that Dave.
Sorry guys! I didn't realise you got a lot of these, but I've been struggling to get decent mpg unless driving like an absolute granny.
Don't worry about it!Sorry guys! I didn't realise you got a lot of these, but I've been struggling to get decent mpg unless driving like an absolute granny.
Not particularly 'driving advice' threads, but any thread involving 'diesel' in the title, especially alongside 'petrol' will provoke intense debate about which is 'better'.
The effect is multiplied by the use of 'convertible', 'MPG', 'remapped', 'torque', 'Le Mans' or 'real world power' in your OP
simoid said:
xreyuk said:
Ahh, cheers for that Dave.
Sorry guys! I didn't realise you got a lot of these, but I've been struggling to get decent mpg unless driving like an absolute granny.
Don't worry about it!Sorry guys! I didn't realise you got a lot of these, but I've been struggling to get decent mpg unless driving like an absolute granny.
Not particularly 'driving advice' threads, but any thread involving 'diesel' in the title, especially alongside 'petrol' will provoke intense debate about which is 'better'.
The effect is multiplied by the use of 'convertible', 'MPG', 'remapped', 'torque', 'Le Mans' or 'real world power' in your OP
xreyuk said:
Seat Leon 1.6TDI Ecomotive.
I managed 60mpg average on a 70 mile trip today with half city, half motorway driving. I barely went above 1200 revs when reaching a constant speed though, I was doing 55-60mph on the motorway for christ sake. Driving like that, I would have expected a little higher, seeing as I used to have a heavy foot in my 1.2L Petrol Corsa and could still get 40mpg. Driving the same way in the car as the Corsa is only getting me 45-50mpg
The car is rated for 74mpg combined, and 83mpg motorway, and I know I'll never hit those, just would have thought it would have been a little higher.
Strangely the MPG was better at 30-40mph than at 60mph.
I get the feeling the VAG diesels' MPG in 'real life' are a long way short of the standard test MPGs for most engines.I managed 60mpg average on a 70 mile trip today with half city, half motorway driving. I barely went above 1200 revs when reaching a constant speed though, I was doing 55-60mph on the motorway for christ sake. Driving like that, I would have expected a little higher, seeing as I used to have a heavy foot in my 1.2L Petrol Corsa and could still get 40mpg. Driving the same way in the car as the Corsa is only getting me 45-50mpg
The car is rated for 74mpg combined, and 83mpg motorway, and I know I'll never hit those, just would have thought it would have been a little higher.
Strangely the MPG was better at 30-40mph than at 60mph.
My dad has an A4 2.0 TDI repmobile, with combined test MPG figure of 53.3, but he averages around 45mpg per tank (on the same commute I usually get over 40 in my Clio 182!)
xreyuk said:
The car has 3700 miles on it and has been in my possession 5 days.
Check your tyre pressures, remove unnecessary weight, and be sure in the knowledge that the engine is only new and 'tight' and they can take 20 or 30 thousand miles to get to their optimum efficiency/'looseness'Cheers Simoid.
I do have a full boot, but like I say, I would have expected to get about 60mpg combined with my normal driving style, as opposed to the granny style driving. Driving granny style I'd expect late 60s from it, I suppose I have only got it and have been told the ECU will adjust somethings to my driving style, and if it's new and tight then that makes me feel better. How much extra mpg you think I will get when it reaches efficiency? (as you can probably tell, I'm not very good with cars).
With regards to FWD/RWD etc, I'm 21 with 6 points (have got them in the first 2 years, so had my license revoked) and had 2 accidents last year, one 50/50, one non fault, but still meant I lost my no claims. You try getting insured with my driving record :P
I do have a full boot, but like I say, I would have expected to get about 60mpg combined with my normal driving style, as opposed to the granny style driving. Driving granny style I'd expect late 60s from it, I suppose I have only got it and have been told the ECU will adjust somethings to my driving style, and if it's new and tight then that makes me feel better. How much extra mpg you think I will get when it reaches efficiency? (as you can probably tell, I'm not very good with cars).
With regards to FWD/RWD etc, I'm 21 with 6 points (have got them in the first 2 years, so had my license revoked) and had 2 accidents last year, one 50/50, one non fault, but still meant I lost my no claims. You try getting insured with my driving record :P
xreyuk said:
Cheers Simoid.
I do have a full boot, but like I say, I would have expected to get about 60mpg combined with my normal driving style, as opposed to the granny style driving. Driving granny style I'd expect late 60s from it, I suppose I have only got it and have been told the ECU will adjust somethings to my driving style, and if it's new and tight then that makes me feel better. How much extra mpg you think I will get when it reaches efficiency? (as you can probably tell, I'm not very good with cars).
I honestly don't know, it's likely someone else here will have first hand experience of a VAG becoming less tight with age (!) and they'll be able to tell you. It'll differ with driving style, engine and probably even the climate (South Coast vs Scottish Highlands!?). I do have a full boot, but like I say, I would have expected to get about 60mpg combined with my normal driving style, as opposed to the granny style driving. Driving granny style I'd expect late 60s from it, I suppose I have only got it and have been told the ECU will adjust somethings to my driving style, and if it's new and tight then that makes me feel better. How much extra mpg you think I will get when it reaches efficiency? (as you can probably tell, I'm not very good with cars).
Perhaps you'll see 5-10% improvement by 30,000 miles? Just guessing.
60 mpg is pretty decent from a half city/half motorway drive nonetheless. Google some fuel economy tips and you might be able to get it up a few MPG even just now - for example easing off the throttle earlier before junctions, and anticipating as far ahead on the motorway so you don't burn fuel simply barrelling into the back of a queue :P
xreyuk said:
With regards to FWD/RWD etc, I'm 21 with 6 points (have got them in the first 2 years, so had my license revoked) and had 2 accidents last year, one 50/50, one non fault, but still meant I lost my no claims. You try getting insured with my driving record :P
Arguing about FWD/RWD is another PH pastime, ignore them 
xreyuk said:
Seat Leon 1.6TDI Ecomotive.
I managed 60mpg average on a 70 mile trip today with half city, half motorway driving. I barely went above 1200 revs when reaching a constant speed though, I was doing 55-60mph on the motorway for christ sake. Driving like that, I would have expected a little higher, seeing as I used to have a heavy foot in my 1.2L Petrol Corsa and could still get 40mpg. Driving the same way in the car as the Corsa is only getting me 45-50mpg
The car is rated for 74mpg combined, and 83mpg motorway, and I know I'll never hit those, just would have thought it would have been a little higher.
Strangely the MPG was better at 30-40mph than at 60mph.
The car has 3700 miles on it and has been in my possession 5 days.
Better than a reduction in air resistance would explain?I managed 60mpg average on a 70 mile trip today with half city, half motorway driving. I barely went above 1200 revs when reaching a constant speed though, I was doing 55-60mph on the motorway for christ sake. Driving like that, I would have expected a little higher, seeing as I used to have a heavy foot in my 1.2L Petrol Corsa and could still get 40mpg. Driving the same way in the car as the Corsa is only getting me 45-50mpg
The car is rated for 74mpg combined, and 83mpg motorway, and I know I'll never hit those, just would have thought it would have been a little higher.
Strangely the MPG was better at 30-40mph than at 60mph.
The car has 3700 miles on it and has been in my possession 5 days.
simoid said:
Don't worry about it!
Not particularly 'driving advice' threads, but any thread involving 'diesel' in the title, especially alongside 'petrol' will provoke intense debate about which is 'better'.
The effect is multiplied by the use of 'convertible', 'MPG', 'remapped', 'torque', 'Le Mans' or 'real world power' in your OP
You missed quotes of 30-70 times Not particularly 'driving advice' threads, but any thread involving 'diesel' in the title, especially alongside 'petrol' will provoke intense debate about which is 'better'.
The effect is multiplied by the use of 'convertible', 'MPG', 'remapped', 'torque', 'Le Mans' or 'real world power' in your OP
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