BMW G45 X3 M50 vs G80 M3

The G80 M3 scores higher, by more than the range either could move.

First car Second car

BMW G45 X3 M50

48Guide Score for 2025Not for most buyersabout $2,794 a year to own

About 59th of 69, likely 44th to 65th

BMW G80 M3

89Guide Score for 2022Excellentabout $2,818 a year to own

About 10th of 69, likely 4th to 19th

The seven parts and acclaim, side by side, each with its share of that car’s score
Part	G45 X3 M50	G80 M3
Heritage	3 counts 14 of 100	34 counts 16 of 100
Engine	51 counts 14 of 100	62 counts 16 of 100
Drive feel	63 counts 19 of 100	76 counts 21 of 100
Analog connection	30 counts 10 of 100	74 counts 10 of 100
Weight	49 counts 10 of 100	72 counts 10 of 100
Long-term value	not measured	not measured
Ownership	54 counts 19 of 100	69 counts 12 of 100
Acclaim	25 counts 14 of 100	73 counts 16 of 100
Chance of a bill over $10,000 in five years	under 0.1%	under 0.1%
Cost to own a year	$2,794 ($1,782 to $4,176)	$2,818 ($1,870 to $4,652)
The bills that decide it	Oil filter housing and valve cover gasket leaks (B58)	Coolant tank and charge-air cooler leaks; Carbon buildup (direct injection); Infotainment software glitches

Guide Score method v5-final.14; each score is shown with its cost to own (about $2,794 a year to own and about $2,818 a year to own at each best year). How it works.