Used BMW X3 M40i

Silver facelifted BMW X3 M40i — Photo: HJUdall, CC0, via Wikimedia Commons (background removed, resized). Shows 2022 BMW X3 M40i, G01 LCI.

Cost per mile

$1.21/mi

$60,643 total over 5 years

about $1,011 a month · $7,255 a year fixed + $0.49 per extra mile

Smiles per dollar

5.5

experience 6.7/10 ÷ $1.21/mi (editorial rating, never part of the cost)

Worked out for 5 years at 10,000 miles a year with U.S. averages for taxes, fees and fuel (enter your ZIP in the tool for your state's rules) and a 7.14% loan with nothing down. Change any of it in the tool or compare it with other cars.

Where the money goes

Depreciation	$20,000	33%
Tax + title	$1,653	3%
Fuel / charging	$11,870	20%
Insurance	$9,000	15%
Maintenance + repairs	$10,998	18%
Registration	$602	1%
Vehicle property tax	$58	0%
Loan interest	$6,463	11%
Total	$60,643	100%

Buying and selling

Price $32,000, worth about $12,000 after 5 years (38% of its value kept). Prices as of September 2026. 23 mpg on premium (EPA combined).

Known problem areas

Oil filter housing gasket (coolant/oil) and valve cover with integrated PCV (B58TU) (high odds, $700–$1,500): Oil seeps from OFHG and valve cover; B58 cover must be replaced as an assembly with PCV diaphragm; oil can reach belts/exhaust source
Electric coolant pump / expansion tank (B58) (medium odds, $900–$2,300): Electric water pump fails or plastic expansion tank cracks; low-coolant warning, limp mode source
Front tension strut (thrust arm) hydro-bushings (G01) (medium odds, $600–$1,100): Fluid-filled bushing tears: clunk over bumps, steering shimmy under braking; dirt roads accelerate source
Variable oil pump with plastic adjusting ring (B58TU built through early 2022) (low odds, $4,000–$8,000): Plastic ring in oil pump can break, low oil pressure warning; cold starts may accelerate; build-date dependent on a 2022 MY source

Similar cars

Every number is an estimate you can change. Sources for each one are on its sticker in the tool (tap the small "i"). How CPM works.