From 06 April 2020, all official CO2 data for new cars is derived from the WLTP test cycle. Site currently being updated. Find out more >>

Best MPG - petrol cars

best mpg cars $year

When buying a new car, finding one with good fuel economy will reduce your fuel costs and tax bill. The list below shows the petrol cars with the best MPG that are available to buy as new in UK in 2020.

All three types of official MPG are shown (combined, urban and extra-urban) plus 'Real MPG'. This last figure is calculated by Next Green Car using a number of data sources - including real-world fuel economy data from Emissions Analytics - to more closely reflect an achievable miles per gallon figure for these petrol vehicles.

Select another search option to see more listings of cars with good fuel economy, or use the main car search to find used cars or filter by more criteria.

Your results
Key

Petrol
Diesel
Hybrid
Plug-in
Hybrid
Electric
NGC
Rating
NGC
Approved
MPG
Combined
Real MPG
(Estimated)
MPG
Equivalent

CITROEN C1 1.0 VTi Touch 72hp 3 door

OTR £10,810 City car
Compare
Official
MPG
79
Real
MPG
56
Fuel cost
/mile
6.2p

PEUGEOT 108 Top! 1.0L Active 72

OTR £14,000 City car
Compare
Official
MPG
79
Real
MPG
56
Fuel cost
/mile
6.2p

PEUGEOT 108 1.0L Active 72

OTR £12,580 City car
Compare
Official
MPG
79
Real
MPG
56
Fuel cost
/mile
6.2p

FIAT 500 1.0 Pop Mild Hybrid 70HP

OTR £12,770 City car
Compare
Official
MPG
77 est
Real
MPG
54 est
Fuel cost
/mile
6.4p

FIAT 500C 1.0 Pop Mild Hybrid 70HP

OTR £15,420 City car
Compare
Official
MPG
77 est
Real
MPG
54 est
Fuel cost
/mile
6.4p

FIAT Panda Cross 1.0 City Cross Mild Hybrid 70HP

OTR £13,990 Crossover
Compare
Official
MPG
75 est
Real
MPG
53 est
Fuel cost
/mile
6.5p

VAUXHALL Corsa 1.2 SE 75PS

OTR £15,790 Supermini
Compare
Official
MPG
73 est
Real
MPG
51 est
Fuel cost
/mile
6.7p

TOYOTA AYGO 1.0 VVTi x 3-door

OTR £9,870 City car
Compare
Official
MPG
73
Real
MPG
51
Fuel cost
/mile
6.7p

MAZDA Mazda2 1.5 Sport Nav 90PS SKYACTIV-G

OTR £17,540 Supermini
Compare
Official
MPG
72 est
Real
MPG
51 est
Fuel cost
/mile
6.7p

FORD Fiesta 1.0T EcoBoost Trend 95PS

OTR £16,640 Supermini
Compare
Official
MPG
72 est
Real
MPG
51 est
Fuel cost
/mile
6.7p

Petrol cars fuel economy

The official MPG figures for all vehicles, including petrol models are derived from the NEDC test. There are two parts to the test: an 'urban' cycle designed to reflect driving in a city environment with many stops and starts and an 'extra-urban' cycle designed to mirror more steady state motorway and country routes. The 'combined' figure, which is the most often quoted figure is an average of 'urban' and 'extra-urban' weighted by the distances covered in each test.

Often drivers find that it is difficult to achieve the official MPG figures, and it is well understood that these rates should be used as a comparison rather than a target to achieve. Next Green Car has estimated a 'Real MPG' figure which reflects real-world conditions more closely. See the real MPG page for more info.

Different petrol models can have dramatically different fuel economy, so before purchase it is essential to research into each model carefully to ensure a good fuel economy, with the resultant reduced fuel bills and car tax. High MPG is directly linked to lower tail-pipe CO2 so a petrol vehicle with good MPG will also emit a lower level of CO2 emissions into the environment.

Chris Lilly

Author:Chris Lilly
Date Updated:10th Jul 2020

Latest Fuel Economy News