John Swain argues for cars over 10 years old to be scrapped (Comment, 26 May). While in theory, modern cars are more fuel efficient, in practice the improvement is marginal.
My old Morris 1100, for example, was capable of 40- 50mpg fully loaded on a long journey. My Astra does little better and the quirks of its engine management electronics make me trust it less.
There is also the issue of the CO2 emissions involved in making a new car. If simple engine reconditioning of old cars was seen as routine maintenance, emissions would be very much better controlled.
R J Higginson, Birmingham
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