Most fuel-efficient minicompact cars, 2026 model year

For model year 2026 the data rates 12 minicompact cars. The most efficient is Fiat 500e at 116 combined and the least efficient is Mercedes-Benz SL-Class at 16; the middle of the list sits at 20.

That is a spread of 100 from first to last; the leader's rating is 7.2 times the last model's.

The largest step between neighbouring ranks comes after Fiat 500e, 1st: the next model, MINI Cooper, is 84 lower.

On annual fuel cost under the file's assumptions, Fiat 500e is lowest at $650 and Mercedes-Benz SL-Class highest at $5,150; the median is $4,125.

By powertrain: Gasoline (9), Electric (1), Hybrid (1), Plug-in hybrid (1).

By make: Aston Martin (2), MINI (2), Mercedes-Benz (2), Bentley (1), 5 more with 5 models in all.

MPGe is used for electric models: it is the electric equivalent of MPG, so the figures are comparable as energy efficiency.

Best combined rating of the most efficient minicompact cars for model year 2026.

All 12 models ranked

Annual fuel cost in the file is based on 15,000 miles a year, 55% city and 45% highway driving, and the fuel prices that fueleconomy.gov published at the time of the release (the same prices for every model year).

Minicompact cars ranked by combined rating, model year 2026
Rank	Model	Make	Powertrain	Combined MPG	Annual fuel cost	CO2 g/mile	Versions
1	Fiat 500e	Fiat	Electric	116	$650	0	2
2	MINI Cooper	MINI	Gasoline	32	$2,550	278	5
3	MINI John Cooper Works	MINI	Gasoline	30	$2,750	288	2
4	Subaru BRZ	Subaru	Gasoline	25	$3,300	362	2
5	Mercedes-Benz SL-Class Hybrid	Mercedes-Benz	Hybrid	22	$3,750	400	1
6	Porsche 911	Porsche	Gasoline	21	$3,900	429	20
7	Bentley Continental Plug-in hybrid	Bentley	Plug-in hybrid	19	$4,350	161	2
8	Ferrari Roma	Ferrari	Gasoline	19	$4,350	467	1
9	Lexus LC	Lexus	Gasoline	18	$4,550	489	2
10	Aston Martin DB12 S	Aston Martin	Gasoline	17	$4,850	522	1
11	Aston Martin DB12 V8	Aston Martin	Gasoline	17	$4,850	507	1
12	Mercedes-Benz SL-Class	Mercedes-Benz	Gasoline	16	$5,150	552	3

Head-to-head comparisons

Each model is shown with its most efficient rated version. How the figures are prepared: methods and data.