BMW G70 i7 M70 vs G80 M3

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

First car Second car

BMW G70 i7 M70

42Guide Score for 2025Not for most buyersabout $3,036 a year to own

About 65th of 69, likely 51st to 67th

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	G70 i7 M70	G80 M3
Heritage	3 counts 15 of 100	34 counts 16 of 100
Engine	41 counts 15 of 100	62 counts 16 of 100
Drive feel	70 counts 19 of 100	76 counts 21 of 100
Analog connection	30 counts 10 of 100	74 counts 10 of 100
Weight	2 counts 10 of 100	72 counts 10 of 100
Long-term value	not measured	not measured
Ownership	49 counts 18 of 100	69 counts 12 of 100
Acclaim	33 counts 15 of 100	73 counts 16 of 100
Chance of a bill over $10,000 in five years	4.5%	under 0.1%
Cost to own a year	$3,036 ($2,028 to $5,164)	$2,818 ($1,870 to $4,652)
The bills that decide it	Rear drive faults (2024 and 2025 cars)	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 $2,957 a year to own and about $2,818 a year to own at each best year). How it works.