BMW G29 Z4 M40i vs G80 M3
Too close to call on the Guide Score: 9 points apart, and the places each could hold overlap. Read the parts and the cost to own.
BMW G29 Z4 M40i
80Guide Score for 2026Excellentabout $2,237 a year to own
BMW G80 M3
89Guide Score for 2022Excellentabout $2,818 a year to own
| Part | G29 Z4 M40i | G80 M3 |
|---|---|---|
| Heritage | 6 counts 15 of 100 | 34 counts 16 of 100 |
| Engine | 59 counts 15 of 100 | 62 counts 16 of 100 |
| Drive feel | 80 counts 20 of 100 | 76 counts 21 of 100 |
| Analog connection | 69 counts 10 of 100 | 74 counts 10 of 100 |
| Weight | 83 counts 10 of 100 | 72 counts 10 of 100 |
| Long-term value | not measured | not measured |
| Ownership | 71 counts 16 of 100 | 69 counts 12 of 100 |
| Acclaim | 45 counts 15 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 | $2,237 ($1,531 to $3,495) | $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 $2,237 a year to own and about $2,818 a year to own at each best year). How it works.