2021 BMW X3 mpg

Combined mpg, sDrive30i RWD

27mpg

Miles a yearGas, $ a gallonCents per kWhElectric miles, %

12,000 miles a year. Gas $3.20. Power 17 cents per kWh. Plug-in trims: 50% electric miles.

137 SUVs (2021), one trim per model: the cheapest with a rating. Median 23 mpg.

2021 BMW X3 mpg by trim
Trim	Engine	Drive	City mpg	Hwy mpg	Combined	Tank, gal	Miles per tank	Cost a year
sDrive30i RWD	2.0L 4cyl	RWD	25	29	27	17.2	464	$1,422
xDrive30i AWD	2.0L 4cyl	AWD	23	29	25	17.2	430	$1,536
xDrive30e AWD	2.0L 4cyl	AWD	23	29	24	13.2	317	$1,600
xDrive30e Plug-In Hybrid AWD	2.0L 4cyl	AWD	21	27	24	13.2	317	$1,371
M40i AWD	3.0L 6cyl	AWD	21	27	23	17.2 to 17.7	N/A	$1,670

Plug-in trims: 50% electric miles.

Fuel cost

sDrive30i RWD, 27 mpg combined.

2021 BMW X3 plug-in trims
Trim	Electric range, mi	MPGe	kWh per 100 mi	Gas mpg	Cost a year
xDrive30e Plug-In Hybrid AWD	18	60	56.0	24	$1,371

Cost a year: 50% electric miles, the rest on gas.

Charging specs by version
Version	Plug	Onboard AC, kW	DC peak, kW	10-80%, min	Level 2, hours	Battery, kWh
All	J1772	3.7	N/A	N/A	3	12

Charging specs: maker data, one source.

Miles one wayDays a week

sDrive30i RWD. 20 miles each way, 5 days a week.

Is 27 mpg good? Yes. Beats 68% of 2026 cars.

X3: combined mpg of the cheapest rated trim, 2009 to 2026.

2021 BMW X3 and rivals
Car	Cheapest trim	MPG or range
2021 BMW X3	sDrive30i RWD	27 mpg
2021 Ford Mustang Mach-E	Select RWD	230 mi range
2021 Mercedes-Benz GLC	GLC 300 RWD	25 mpg
2021 Audi Q5	45 TFSI Premium AWD	25 mpg
2021 Land Rover Range Rover Evoque	S AWD	22 mpg
2021 Lincoln Nautilus	FWD	23 mpg
2021 Alfa Romeo Stelvio	RWD	25 mpg

EPA ratings. Your own mpg will differ.

Gas prices change by state and by week.