Are diesels a good option?
But are diesels the right choice for everybody? Soaring petrol prices have had Brits rushing to buy diesels in order to save on fuel bills and road tax - in fact 2011 saw half of all new car sales in the UK oil powered with increasing numbers of people clamouring for second-hand examples.
However, analysis from car valuation expert, Glass's Guide, reveals that unless you drive more than 10,000 miles a year, you are unlikely to save any money by opting for a second-hand diesel.
* CHECKING THE COST: Are diesels worth it? The figure is based on Glass's insight into car values with experts concluding that 10,000 miles is the 'golden number' of miles you need to drive if you are to recover the extra cost of buying a second-hand diesel.
Both second-hand and new diesels command a strong price premium over their petrol counterparts. The average cost of a new family-sized car which runs on diesel is pounds 1,300 more than its petrol equivalent.
Due to increased demand, this is magnified in the second-hand market where the average three-year-old family car is up to pounds 2,000 more than the petrol model.
This means, if you buy a three-yearold diesel and drive less than 10,000 miles a year, you are unlikely to recover this money over an average three year length of ownership.
So do you really need a diesel? Low mileage drivers are gradually cottoning on to the fact that there are some very efficient new petrol engines out there and because they tend to be cheaper than oil burners on the second-hand market they may be a much more clever choice.