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Mercedes-Benz SL 350
Convertible · Gasoline
vs
BMW Z4 M40i
Convertible · Gasoline
Mercedes-Benz SL 350
Car A
Mercedes-Benz SL 350
A two-seat luxury model with strong V6 performance and long-trip comfort, best for drivers who value premium feel and pace. Limited practicality and a high purchase price make it less suited to family or cargo needs.
2 seatsConvertibleGasoline5-star safety
BMW Z4 M40i
Car B
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.
2 seatsConvertibleGasoline5-star safety7 L/100km340 hp
Why compared same body typesame powertrainsame ranking profilesame seatssecondary usage matchstrong ranking match

Usage fit

Family 26 / 34
City 18 / 38
Budget / value 18 / 53
Road trip 52 / 39
Performance 40 / 37
Cargo 11 / 7
Practical 13 / 26
Premium 69 / 55
Winter 30 / 26

Scores out of 100. Blue = Mercedes-Benz SL 350 · Orange = BMW Z4 M40i

Specs side-by-side

Spec Mercedes-Benz SL 350 BMW Z4 M40i
Values are representative — confirm for your market and trim.

Pros & cons

Mercedes-Benz SL 350

  • Refined V6 power (313 hp) with brisk 0–100 km/h in 5.9 s
  • Premium comfort focus suits long-distance cruising
  • 335 L trunk accommodates weekend bags for two
  • Signals indicate strong safety standing

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

Verdict

Pick Mercedes-Benz SL 350 if…
Efficiency & everyday ease
Mercedes-Benz SL 350 is the choice if fuel economy and city-friendly driving are your priority.
Pick BMW Z4 M40i if…
More power
BMW Z4 M40i puts out 340 hp vs 313 — meaningfully quicker and more confident on motorways.

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