BMW iX vs BMW Z4 M40i

How does the BMW iX 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 iXBMW iX
vs
BMW Z4 M40iBMW Z4 M40i
SpecBMW iXBMW Z4 M40i
Horsepower (max)650 hp382 hp
0-100 km/h (fastest)3.8 s4.4 s
Top speed250 km/h250 km/h
Variants31
Body styleLarge SUVRoadster
GenerationI20G29
Production2021 – present2019 – 2026
Length4,965 mm4,324 mm
Width1,970 mm1,864 mm
Height1,695 mm1,304 mm
Wheelbase3,000 mm2,470 mm

BMW iX vs BMW Z4 M40i: common questions

Is the BMW iX or BMW Z4 M40i faster?
The BMW iX is quicker, hitting 0-60 mph in 3.6s versus the BMW Z4 M40i's 4.2s (0-100 km/h in 3.8s vs 4.4s).
Which has more horsepower, the BMW iX or the BMW Z4 M40i?
The BMW iX makes more power: 650 hp (485 kW) versus 382 hp (285 kW) for the BMW Z4 M40i.
Is the BMW iX or BMW Z4 M40i faster on top speed?
Both cars top out at 155 mph (250 km/h).
What is the main difference between the BMW iX and the BMW Z4 M40i?
The BMW iX is a large suv, while the BMW Z4 M40i is a roadster. That difference in body style drives most of the others.
BMW iX specs →BMW Z4 M40i specs →