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Poor fuel economy in my 2002 Fiesta Diesel

I commute to London 3 times a week and it's a 220 mile round trip, 90% of my trip is on motorways and I never go above 70mph. Now I know my car isn't new but I cant get over 40mpg. Is this acceptable for a car of this age or is there something wrong with the engine?

Asked on 24 September 2012 by Gene1za

Answered by Honest John
Something wrong. Obviously the first thing to change is the air filter.

Real MPG enables you to register the fuel economy you are actually getting against your make and model of car, its engine and type of transmission.

Every time you enter an average consumption figure against your car, the overall average automatically adjusts to reflect it.

Real MPG
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