BMW M8 vs BMW Z4 M40i

How does the BMW M8 stack up against the BMW Z4 M40i? We put their headline specs side by side so you can see exactly where each car leads.

BMW M8BMW M8
vs
BMW Z4 M40iBMW Z4 M40i
SpecBMW M8BMW Z4 M40i
Horsepower (max)617 hp382 hp
0-100 km/h (fastest)3.2 s4.4 s
Top speed305 km/h250 km/h
Variants31
Body stylePerformance grand tourerRoadster
GenerationF92 / F93G29
Production2019 – 20252019 – 2026
Length4,867 mm4,324 mm
Width1,907 mm1,864 mm
Height1,362 mm1,304 mm
Wheelbase2,827 mm2,470 mm

BMW M8 vs BMW Z4 M40i: common questions

Is the BMW M8 or BMW Z4 M40i faster?
The BMW M8 is quicker, hitting 0-60 mph in 3s versus the BMW Z4 M40i's 4.2s (0-100 km/h in 3.2s vs 4.4s).
Which has more horsepower, the BMW M8 or the BMW Z4 M40i?
The BMW M8 makes more power: 617 hp (460 kW) versus 382 hp (285 kW) for the BMW Z4 M40i.
Is the BMW M8 or BMW Z4 M40i faster on top speed?
The BMW M8 has the higher top speed at 190 mph (305 km/h), versus 155 mph (250 km/h) for the BMW Z4 M40i.
What is the main difference between the BMW M8 and the BMW Z4 M40i?
The BMW M8 is a performance grand tourer, while the BMW Z4 M40i is a roadster. That difference in body style drives most of the others.
BMW M8 specs →BMW Z4 M40i specs →