Top 100 most fuel-efficient 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.

Only one MPV managed to better 40mpg during our rigorous testing. The Vauxhall Zafira 1.9 CDTI achieved 40.1mpg, holding off the Citroen C4 Picasso and Ford C-MAX, which returned 39.6mpg and 39.5mpg respectively. The two other Ford MPVs, the S-MAX and Galaxy proved hard to separate in fifth and sixth positions.