Top 100 most fuel-efficient cars - city cars

Want to save fuel and cut down your CO2 emissions? The DTI has just unveiled the “Act On CO2” initiative to encourage car buyers to purchase more fuel-efficient motors. Auto Express has conducted its own research to find Britain’s 100 most economical motors.

The tests were conducted on public roads and take into account traffic conditions, weather, types of road and all the other variables that influence your mpg. Ten classes of cars were tested, from city cars to SUVs and family saloons to MPVs.

Best sector of them all for economy – and also home to the cleanest motors in our test, was the city car class. The winner, and the most economical car we’ve ever tested, was the Fiat Panda 1.3 Multijet which achieved 52.2mpg. With few diesel engined city cars available only one other oil-burner made it into our top ten – the second placed Citroen C2 1.4 HDi. Best petrol was another Citroen, the C1 1.0 averaging 46.9mpg.