robertathome Posted January 21, 2011 Share Posted January 21, 2011 My car is not good on diesel but start first time does not smoke any idea why Link to comment Share on other sites More sharing options...
tuffy 69 Posted January 21, 2011 Share Posted January 21, 2011 depends on weather you do alot of short journeys constant stop starting, i have a 10 plate nissan note diesel 1.5 that only does 45 to gallon round town Link to comment Share on other sites More sharing options...
carosio Posted January 21, 2011 Share Posted January 21, 2011 It should do more than that. I have a 1996 Astra TD at 128k and I averaged 40-42 mpg since the cold weather started and this is mixed driving around Sheffield, sometimes just the 3 miles to the supermarket. On a run it goes up to the early 50s and taken steady on the motorway does almost 60mpg. I do drive for economy, though. A friend has got a 2004 Focus diesel 1.8 which he bought new and achieves over 50mpg without trying (mixed driving). He has just driven up from his home on the southern coast of Spain (1700 miles) and said that the mpg display on the dash was regularly showing over 70mpg, although he now has one of these engine "re-mapping" devices which he says has had a remarkable effect on power and economy. Link to comment Share on other sites More sharing options...
zigzag Posted January 21, 2011 Share Posted January 21, 2011 As said previously cold weather has an effect on fuel consumption ,newer cars with lighter alluminium engines and progressive electronic engine management systems get to their optimum operating temperature quicker but it could be ready for new glow plugs and a good service always helps. Link to comment Share on other sites More sharing options...
jennyfour Posted January 21, 2011 Share Posted January 21, 2011 My 08 plate Focus 1.6 Deisel only does 42 MPG on average. Less if I only drive in Sheffield with all these hills and the stop start all the time. Link to comment Share on other sites More sharing options...
Astonblade Posted January 21, 2011 Share Posted January 21, 2011 I have a C Class 2.2 diesel, and I get about 32 mpg. Its caused by the cold weather - my engine takes an age to get up to temperature- and the millions of traffic lights Link to comment Share on other sites More sharing options...
alchresearch Posted January 21, 2011 Share Posted January 21, 2011 I've had a few 306 diesels. They aren't as economical in the winter but it should return more. I'd do a service, swap the glow plugs, stick on a new battery perhaps and do a full check of all air pipes for leaks. My current car is a 307 and that's doing about 50-55 mpg. Link to comment Share on other sites More sharing options...
ratter71 Posted January 21, 2011 Share Posted January 21, 2011 How do you know its only doing 30mpg? Is it off the computor or working it out brim to brim? Link to comment Share on other sites More sharing options...
HATHER-SAGE Posted January 21, 2011 Share Posted January 21, 2011 My car is not good on diesel but start first time does not smoke any idea whyhi try a new air filter ,fuel filter and injection cleaner,,,should do the trick Link to comment Share on other sites More sharing options...
FORE Posted January 21, 2011 Share Posted January 21, 2011 hi try a new air filter ,fuel filter and injection cleaner,,,should do the trick What injection cleaner do you recommend? Link to comment Share on other sites More sharing options...
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