The What Car? True MPG technicians test new cars every week. While the official Government figures come from a laboratory test, our team takes each car on a thorough road test that produces the data needed to deliver real-world MPG figures.
This week, we’re naming the most fuel-efficient cars that we’ve tested so far. Only nine cars have achieved more than 60mpg in our tests – most are superminis, and all have diesel engines.
1. Kia Rio 1.1 CRDi Ecodynamics – official 88.3mpg: True MPG 70.6mpg
The best True MPG result recorded so far is 70.6mpg, from the Kia Rio 1.1 CRDi Ecodynamics. The Government figure is 88.3mpg.
2. Citroen C3 1.4 e-HDi – official 83.0mpg: True MPG 70.3mpg
This Citroen C3 is almost as efficient as the Rio – the 1.4 e-HDi model managed 70.3mpg, which was 12.7mpg below its official rating of 83.0mpg. It’s the only car in the top nine that was tested with an automatic gearbox.
3. Honda Civic 1.6 i-DTEC – official 78.5mpg: True MPG 66.4mpg
The largest car in this list is the Honda Civic 1.6 i-DTEC. The hatchback has a quoted fuel economy of 78.5mpg, but achieved 66.4mpg in the hands of our technicians.
4. Ford Fiesta 1.6 TDCi Econetic – official 78.5mpg: True MPG 62.1mpg
The Ford Fiesta is the best-selling car in the UK; our results show that the 1.6 TDCi Econetic is the most frugal model in the range. Our team recorded 62.1mpg, while the Government data quotes 78.5mpg.
5. Dacia Sandero 1.5 dCi – official 74.3mpg: True MPG 61.7mpg
The Dacia Sandero is not only cheap to buy – our data suggests it will be cheap to fuel as well. Our technicians recorded 61.7mpg against official economy of 74.3mpg.
6. Vauxhall Corsa 1.3 CDTi Ecoflex – official 85.6mpg: True MPG 61.4mpg
The Corsa Ecoflex's official 85.6mpg is one of the highest claims of any new car. In real-world tests we found a 24.2mpg shortfall, although 61.4mpg still makes it one of the most efficient cars we've tested.
7. Hyundai i20 1.1 CRDi – official 74.3mpg: True MPG 61.1mpg
The i20 1.1 CRDi shares the same three-cylinder engine with the Kia Rio 1.1, but isn't quite as efficient in this guise. It managed 61.1mpg along our test route.
8. Fiat Panda 1.3 Multijet – official 72.4mpg: True MPG 61.0mpg
The Panda Multijet is the smallest car in this list, which makes it the most frugal city car we've tested so far. Our technicians recorded 61.0mpg against official fuel economy of 72.4mpg.
9. Renault Clio 1.5 dCi – official 78.5mpg: True MPG 60.1mpg
Renault's 1.5 dCi engine is also available in the Captur mini-SUV, but in the Clio it achieved 60.1mpg in our True MPG tests.
Visit whatcar.com/truempg to see the full range of cars we’ve tested to find out what you really can expect to achieve on UK roads.