simonix Posted January 14, 2014 Report Share Posted January 14, 2014 Diesels are not good on MPG when cold. One of the main factors is that most diesel engine blocks are cast iron or steel rather than aluminium like most petrol engine blocks. This means that they take longer to warm up to operating temperature and start giving you the desired high MPG. Perfect example. I had a 3 litre petrol 3series BMW. 7 miles to my workplace. It would get to operating temperature within 3-4 minutes driving, and I would spend about £30 a week on commuting. I sold that to buy the 3 litre diesel 3 series. This wouldn't get to operating temperature at all in the 7 mile journey to work! Ended up costing me about £35-40 a week due to the higher price in diesel. On long runs, the diesel is in a league of its own, but stop-start journeys.... Not too sure, in my experience. Quote Link to comment Share on other sites More sharing options...
victorismyhero Posted January 14, 2014 Report Share Posted January 14, 2014 petrol.....then get LPG conversion..... Quote Link to comment Share on other sites More sharing options...
kent Posted January 15, 2014 Report Share Posted January 15, 2014 Just balance the purchase price against the expected fuel saving, most often the more economical on fuel car or van cost enough extra to buy a heap of fuel. 4.0 ltr petrol 4x4s etc sell for far less than a super efficient 2.5 diesel and a low mileage user should always consider this! Funny thing is often low mileage users are too fuel conscious by nature and pay too great a price for better fuel economy Quote Link to comment Share on other sites More sharing options...
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