X & S Type Diesel Fuel economy Survey
Discussion
I (and probably many other interested potential customers)would be very interested in fuel consumption reports along the following lines:
X-Type (2 variants?)
S-Type (1 variant?)
Assuming automatics are as fragile as their petrol engined counterparts (see The Leaper's comments etc) then stick to the manuals, cruising at following speeds:
50
55
60
65
70
75 (yes, yes on private roads..)
80 (yes, yes on private roads..)
Ideally on flat duals / motorways with negligible wind (external..) and excess weight on board
Base figs on average over 5 miles.
When best speed determined for economy, do re-set fuel average consumption over 10 miles or more of unbroken set speed
Additionally, overall average figure over a typical tank full of local driving.
Incidentally, if anyone has had theirs 'chip tuned' or similar, I would be particularly interested in the comparison (many claim improved economy.)
Anyone think 70 mpg possible at 70 mph on a motorway cruise?
X-Type (2 variants?)
S-Type (1 variant?)
Assuming automatics are as fragile as their petrol engined counterparts (see The Leaper's comments etc) then stick to the manuals, cruising at following speeds:
50
55
60
65
70
75 (yes, yes on private roads..)
80 (yes, yes on private roads..)
Ideally on flat duals / motorways with negligible wind (external..) and excess weight on board
Base figs on average over 5 miles.
When best speed determined for economy, do re-set fuel average consumption over 10 miles or more of unbroken set speed
Additionally, overall average figure over a typical tank full of local driving.
Incidentally, if anyone has had theirs 'chip tuned' or similar, I would be particularly interested in the comparison (many claim improved economy.)
Anyone think 70 mpg possible at 70 mph on a motorway cruise?
Edited by Lone Granger on Wednesday 17th December 22:15
LG,
I think I should comment on ths gearbox issues as maybe you have taken an extreme view following my earlier post.
First, I think the auto experience is far better than the manual; after all we're talking Jaguar, and when it comes to personal experience that's what is expected. Second, when it comes to selling on you get nothing for the manual as the dealers know everyone wants and expects an auto box. Third, the manual box is superb. Fourth, my personal experiences, as recorded elsewhere, are somewhat extreme; remember that the problems have not cost me a penny, and getting the the JMD I use and Jaguar to sort matters has been uneventful, indeed they have both been very heplful. Fifth, the same box is used by BMW and Mercedes (so it must be good) and I know they have had problems in the long term with it. Sixth, it looks like the various fixes I have had with the gearbox have been resolved (touch wood)as I've done some 20,000 or so now since prior problems. I have just extended the Jaguar warranty a further year as a precaution, though.
By the way, I've just had my S Type go through its MoT, and I had an XF diesel loan car for the day. I was delighted to have the opportunity to drive an XF as I think Jaguar has made a big leap as regards the "futurisation" of their model range with the XF, particularly with the interior which is most un Jag like and I think is superb. Anyway, I did maybe 100 or so miles with the XF that day. Likes: interior, fab driving position for me, spaciousness. Not so good: ride (this was a sport model with what looked like seriously low profile tyres and so the ride was harsh and crashy), MPG was disappointing too: I did not do a real check and I did not drive particularly economically but I do know I put £15 of diesel back in the tank after 100 miles so as to take it back at the level when I picked it up. This may be similar to an S-Type 2.7 diesel perhaps.
R.
I think I should comment on ths gearbox issues as maybe you have taken an extreme view following my earlier post.
First, I think the auto experience is far better than the manual; after all we're talking Jaguar, and when it comes to personal experience that's what is expected. Second, when it comes to selling on you get nothing for the manual as the dealers know everyone wants and expects an auto box. Third, the manual box is superb. Fourth, my personal experiences, as recorded elsewhere, are somewhat extreme; remember that the problems have not cost me a penny, and getting the the JMD I use and Jaguar to sort matters has been uneventful, indeed they have both been very heplful. Fifth, the same box is used by BMW and Mercedes (so it must be good) and I know they have had problems in the long term with it. Sixth, it looks like the various fixes I have had with the gearbox have been resolved (touch wood)as I've done some 20,000 or so now since prior problems. I have just extended the Jaguar warranty a further year as a precaution, though.
By the way, I've just had my S Type go through its MoT, and I had an XF diesel loan car for the day. I was delighted to have the opportunity to drive an XF as I think Jaguar has made a big leap as regards the "futurisation" of their model range with the XF, particularly with the interior which is most un Jag like and I think is superb. Anyway, I did maybe 100 or so miles with the XF that day. Likes: interior, fab driving position for me, spaciousness. Not so good: ride (this was a sport model with what looked like seriously low profile tyres and so the ride was harsh and crashy), MPG was disappointing too: I did not do a real check and I did not drive particularly economically but I do know I put £15 of diesel back in the tank after 100 miles so as to take it back at the level when I picked it up. This may be similar to an S-Type 2.7 diesel perhaps.
R.
Hi Lone Granger. I have a 56 plate 2.7 TDI S type auto. I cannot go into the sort of detail you are looking at because I do not reset my computer between services. On the other hand the car is about to go in for its next 15k service I can confirm my MPG experience over the last 15K (which is pretty much the same as my perivious 15K).
My Mileage is mostly business and very predicatable: -
70 mile daily commute 50% normal urban roads 50% M42/M5 (rush hour in the morning after rush hour PM)
320 Mile round trip to Petersfield (Hampshire) once a fortnight
700 mile round trip every three months to Troon in Scotland
The rest is just weekend driving but will have minimal impact on the overall result.
On return from Scotland at the weekend the Ave MPG on my computer had risen to 41.2. In the week prior to the trip it had been stable at 38.8 mpg which is the normal reading I get during a weeks commute. I have now done three days commuting since my return to Scotland and as of this morning the computer is reading 39.9.
Not as detailed as you were after but real personal longterm experience and perhaps of use.
My Mileage is mostly business and very predicatable: -
70 mile daily commute 50% normal urban roads 50% M42/M5 (rush hour in the morning after rush hour PM)
320 Mile round trip to Petersfield (Hampshire) once a fortnight
700 mile round trip every three months to Troon in Scotland
The rest is just weekend driving but will have minimal impact on the overall result.
On return from Scotland at the weekend the Ave MPG on my computer had risen to 41.2. In the week prior to the trip it had been stable at 38.8 mpg which is the normal reading I get during a weeks commute. I have now done three days commuting since my return to Scotland and as of this morning the computer is reading 39.9.
Not as detailed as you were after but real personal longterm experience and perhaps of use.
Edited by marcosal on Thursday 18th December 09:56
56 Plate 2.7D Sport S-Type over 5k mixed driving but predominantly motorway miles at 80MPH indicated, 77MPH GPS is 35MPG.
The previous one 54 Plated 2.7DSE S-Type did 35MPG as well.
On gentle cruise the newer one can get the computer to 43-44MPG whereas the old 'un never got better than 41MPG.
The previous one 54 Plated 2.7DSE S-Type did 35MPG as well.
On gentle cruise the newer one can get the computer to 43-44MPG whereas the old 'un never got better than 41MPG.
55 plate euro 1v 2.7 S type manual from 0 - 69000 miles.
Whole life avarage 41.6 mpg
500 Mile motorway and A road avaraging 70mph
with cruising at 85mph. 44- 45 MPG
Same Journey restricting revs to sub 3500 49.8 mpg
General urban cycle 39mpg
Changing from Continental tyres to Michelin reduced MPG by 2-3 MPG.
Hope that helps
Whole life avarage 41.6 mpg
500 Mile motorway and A road avaraging 70mph
with cruising at 85mph. 44- 45 MPG
Same Journey restricting revs to sub 3500 49.8 mpg
General urban cycle 39mpg
Changing from Continental tyres to Michelin reduced MPG by 2-3 MPG.
Hope that helps
I have recently purchased a 52 plate 2.5 V6 X type, with trips to and from work, around 40 miles on ordinary roads as we have up in the north of Scotland, my weekly consumption is around 32- 36 Mpg.
On a straight run to Inverness I can achieve with normal road conditions and observing the speed limits around at 38- 41 mpg,
and before anyone says I must be driving like a wimp, this is normal speeds for the roads up here, obviously if you tan it between gears this drops dramatically, but on a round trip on the A9 some 300 miles and not hanging around I achieved 32 mpg.
I do like the manual box, and not having had a car as big as this before certainly enjoy driving this car.
On a straight run to Inverness I can achieve with normal road conditions and observing the speed limits around at 38- 41 mpg,
and before anyone says I must be driving like a wimp, this is normal speeds for the roads up here, obviously if you tan it between gears this drops dramatically, but on a round trip on the A9 some 300 miles and not hanging around I achieved 32 mpg.
I do like the manual box, and not having had a car as big as this before certainly enjoy driving this car.
DEKE said:
I have recently purchased a 52 plate 2.5 V6 X type, with trips to and from work, around 40 miles on ordinary roads as we have up in the north of Scotland, my weekly consumption is around 32- 36 Mpg.
On a straight run to Inverness I can achieve with normal road conditions and observing the speed limits around at 38- 41 mpg,
and before anyone says I must be driving like a wimp, this is normal speeds for the roads up here, obviously if you tan it between gears this drops dramatically, but on a round trip on the A9 some 300 miles and not hanging around I achieved 32 mpg.
I do like the manual box, and not having had a car as big as this before certainly enjoy driving this car.
Yowsa..! Everyone reports average of 26 mpg overall, so 36 mpg is a bit of a surprise! - If I knew I could cruise on motorway around 70 at 36 mpg+ I would be very happy and steer away from diesel. - I would also be happy with gentle local driving returning comfortably over 30 -- anyonelse geting these sort of figs from 2.5 or 3 litre manuals?On a straight run to Inverness I can achieve with normal road conditions and observing the speed limits around at 38- 41 mpg,
and before anyone says I must be driving like a wimp, this is normal speeds for the roads up here, obviously if you tan it between gears this drops dramatically, but on a round trip on the A9 some 300 miles and not hanging around I achieved 32 mpg.
I do like the manual box, and not having had a car as big as this before certainly enjoy driving this car.
Lone Granger said:
Yowsa..! Everyone reports average of 26 mpg overall, so 36 mpg is a bit of a surprise!
I think the key phase was DEKE said:
around 40 miles on ordinary roads as we have up in the north of Scotland
Disseisels really score over Petrol powered cars when you are stuck in traffic.BAHN-STORMA said:
shamrock said:
I have one year old 2.2 Diesel X Type with 9,000 miles on the clock. So far I have not managed to do a run above 35 mpg 
I'm not driving it particularly hard and am doing typical dual carriageway journeys of around 50 miles.
+1I'm not driving it particularly hard and am doing typical dual carriageway journeys of around 50 miles.
I just 'binned' my 2005 X-Type 2.0D Estate as I struggled to get 32mpg on my weekly commute (100 miles per day, mostly motorway). It's replacement, a Saab 9-5 2.2TID is managing 46mpg over the same route.
I think I'll bin mine before the end of the month.
Shar2 said:
My 05 plate X type SE estate is averaging 43.7mpg on mainly Single and dual carriageways and around town, (Commuting between Sunbury and Roehampton Vale). I'm going to get it economy remapped at Paramount Performance soon so it will interesting to see what they can do to it.
my 2L 05 x type diesel estate is averaging 43.6 to the gal around town, i have had 44.4 on a run,hello dave fancy seeing you here lol
>>andy
mine has done 110,000 but was a one owner reps car with full jag service history when i bought it,
i do think that servicing plays a big part in fuel economy,
a mate of mine has a 56 plate 2L diesel saloon 49,000 mls and travels 30 miles to work, he is getting 46 mpg,
keep us informed how you get on with your mods dave
>>andy
i do think that servicing plays a big part in fuel economy,
a mate of mine has a 56 plate 2L diesel saloon 49,000 mls and travels 30 miles to work, he is getting 46 mpg,
keep us informed how you get on with your mods dave
>>andy
she don't get to drive the xk now i have the detroits 
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