XF 3.0d S - fuel economy
Discussion
Sorry I do get the feeling this will have been asked before, but here goes.
Jag quotes 42mpg combined and 51.3 extra-urban. I know these figures are always very 'optimistic', but I reckon (based on my week-long ownership of a 2010 pre-owned car as above) these are about 10mpg out of bed even when light-footed. That's a 25% bulls
t factor, which is a lot even when adjusting for normal mfr fibs!
It would appear that VCA/DirectGov are now happy to quote mfr figures, which means I won't be using that facility again as it has been compromised. Also, honestjohn "real world mpg" wiki would appear to quote similar experiences to mine.
Clearly this type of situ may well be the reason they boshed an 8-speed auto in the facelift version instead of the 6er I have in mine.
Very happy with the car otherwise.
Jag quotes 42mpg combined and 51.3 extra-urban. I know these figures are always very 'optimistic', but I reckon (based on my week-long ownership of a 2010 pre-owned car as above) these are about 10mpg out of bed even when light-footed. That's a 25% bulls
t factor, which is a lot even when adjusting for normal mfr fibs!It would appear that VCA/DirectGov are now happy to quote mfr figures, which means I won't be using that facility again as it has been compromised. Also, honestjohn "real world mpg" wiki would appear to quote similar experiences to mine.
Clearly this type of situ may well be the reason they boshed an 8-speed auto in the facelift version instead of the 6er I have in mine.
Very happy with the car otherwise.
Interesting topic and not confined to Jaguar. As I've posted elsewhere my own experience with the XF was similar to yours
When you consider that the road fund licence is based on the official figures and these figures are massively innaccurate then it makes a mockery of the whole thing.
I find it strange that hybrids and certain diesels are miles away (literally) from the official figures, whereas some of the large petrol engined cars (like my XKR) are almost exactly on the money.
Based on the feedback that's now available from actual mpg experience I think it's time the official test methods were revised.
When you consider that the road fund licence is based on the official figures and these figures are massively innaccurate then it makes a mockery of the whole thing.
I find it strange that hybrids and certain diesels are miles away (literally) from the official figures, whereas some of the large petrol engined cars (like my XKR) are almost exactly on the money.
Based on the feedback that's now available from actual mpg experience I think it's time the official test methods were revised.
OK, I've just finished a fairly long drive down to the Haute-Vienne in France from Biggleswade in Bedfordshire so can impart the figures that I got for the trip. My car has km clocks so the figures are stated in l/100km with a rough conversion to mpg. I purposely took it very easy as I was in no hurry and wanted to see what I could achieve.
Total distance: 968 kms (602 miles)
Average speed Biggleswade to Eurotunnel: 110 km/h (68.35 mph)
Average speed Calais to Chalus, Haute-Vienne: 120 km/h (74.56 mph) - included a diversion through the centre of Compiegne and going through centre of Paris
Overall average consumption: 6.2l/100km (45.56 mpg)
My car is a LHD April 2010 XF 3.0 S Portfolio - Vapour Grey
Total distance: 968 kms (602 miles)
Average speed Biggleswade to Eurotunnel: 110 km/h (68.35 mph)
Average speed Calais to Chalus, Haute-Vienne: 120 km/h (74.56 mph) - included a diversion through the centre of Compiegne and going through centre of Paris
Overall average consumption: 6.2l/100km (45.56 mpg)
My car is a LHD April 2010 XF 3.0 S Portfolio - Vapour Grey
Perik Omo said:
OK, I've just finished a fairly long drive down to the Haute-Vienne in France from Biggleswade in Bedfordshire so can impart the figures that I got for the trip. My car has km clocks so the figures are stated in l/100km with a rough conversion to mpg. I purposely took it very easy as I was in no hurry and wanted to see what I could achieve.
Total distance: 968 kms (602 miles)
Average speed Biggleswade to Eurotunnel: 110 km/h (68.35 mph)
Average speed Calais to Chalus, Haute-Vienne: 120 km/h (74.56 mph) - included a diversion through the centre of Compiegne and going through centre of Paris
Overall average consumption: 6.2l/100km (45.56 mpg)
My car is a LHD April 2010 XF 3.0 S Portfolio - Vapour Grey
Are your figures from the car computer or calculated by hand? I ask because I suspect the computer in my XFR is a tad optimistic. Total distance: 968 kms (602 miles)
Average speed Biggleswade to Eurotunnel: 110 km/h (68.35 mph)
Average speed Calais to Chalus, Haute-Vienne: 120 km/h (74.56 mph) - included a diversion through the centre of Compiegne and going through centre of Paris
Overall average consumption: 6.2l/100km (45.56 mpg)
My car is a LHD April 2010 XF 3.0 S Portfolio - Vapour Grey
Average Speed from the computer and consumption is by brim to brim fill-ups and manual calculation. On the trip to the UK in February the average consumption was 7.4l/100km (38 mpg) but that was with the cruise set to 130km/h on the French Autoroutes again with brim to brim fill-ups (only measured on the trip from Chalus to Caen as that's where I filled up).
Quite right!! Just been out again in the car again to pick some relatives up from the airport and checked the DIS before I left. I apologise for the mistake in the original post I should have said that the cruise was set to 110km/h in the UK and 120 km/h in France NOT that that was the average speed!! When I checked the DIS this afternoon it read an average speed of 90km/h and that was with a few short trips out to the shops after we got back
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