True MPG: best and worst city cars and small cars 2018
Which cars return the best fuel economy in the real world? Here we count down the city cars and small cars with the best True MPG figures – and reveal the least efficient model we've ever tested...
Official mpg 65.7 True MPG 57.8 % difference 12%
Despite being one of the cheapest new cars around, the Celerio comes with a decent array of equipment, including air conditioning, a DAB radio and Bluetooth connectivity. We also like the Celerio's 1.0-litre petrol engine, which is handy because it's the only option available. It recorded a True MPG of 57.8mpg, making the Celerio the most efficient city car we've ever tested.
The least efficient small car
Mini Cooper 1.5 3dr
Official mpg: 60.1 True MPG 41.3 % difference 31.3%
Stylish though it may be, this three-door version of the Mini hatchback is the least efficient small car we've put through True MPG. Although, truth be told, it's still not far off our top 10 entrants.