Car A
BMW Z4 M40i
Two-seat roadster that delivers strong performance and a premium feel, with 340 hp and 0–100 km/h in 4.5 s. Efficient for its class at 7 L/100 km, but practicality is limited.
BMW Z4 M40i
Convertible · Gasoline
vs
Mercedes-Benz SL 400
Convertible · Gasoline
Car B
Mercedes-Benz SL 400
The Mercedes-Benz SL 400 focuses on premium, two-seat touring with strong performance from a 333 hp V6 and swift 0–100 km/h in 5.2 s. It favors power and road-trip usability over family practicality.
Why compared
same body typesame powertrainsame ranking profilesame seatssame usage profilestrong ranking match
Usage fit
Family
34
/
27
City
38
/
21
Budget / value
53
/
22
Road trip
39
/
52
Performance
37
/
39
Cargo
7
/
12
Practical
26
/
15
Premium
55
/
68
Winter
26
/
30
Scores out of 100. Blue = BMW Z4 M40i · Orange = Mercedes-Benz SL 400
Specs side-by-side
Spec
BMW Z4 M40i
Mercedes-Benz SL 400
Values are representative — confirm for your market and trim.
Pros & cons
BMW Z4 M40i
- Serious pace and power: 340 hp, 500 Nm, 0–100 km/h in 4.5 s
- Efficient for its class at a combined 7 L/100 km
- Premium roadster character suits city driving and relaxed road trips
- 281‑liter trunk accommodates weekend luggage for two
- Only two seats; not a family or carpool solution
- Modest cargo capacity; weak fit for cargo-heavy use
- Premium pricing at 61,000
- Gasoline-only powertrain with no electrified option
Mercedes-Benz SL 400
- Strong performance from a 333 hp V6 with 5.2 s 0–100 km/h
- Suited to premium and road-trip use, with a 355 L trunk for weekend bags
- Efficient for its class with 7.3 combined consumption
- Strong safety ranking within its set
- Only 2 seats; not suitable for family duty or carpooling
- Not optimized for cargo-heavy or highly practical use
- Premium price of 88,750
- Petrol-only powertrain may not suit buyers seeking electrified options
Verdict
Pick BMW Z4 M40i if…
Best fuel economy
BMW Z4 M40i uses 7.0 L/100km vs 7.3 — a meaningful saving if you cover high mileage.
Pick Mercedes-Benz SL 400 if…
Performance & capability
Mercedes-Benz SL 400 is the choice if you want more power, speed, or all-weather capability.