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Home›Duel›Mercedes Maybach vs BMW Z4

Performance comparison

Mercedes Maybach SL 680 Monogram Series Roadster vs BMW Z4 M40i G29: which is truly faster?

Simulated drag race 0 → 1,000 m in real time. Synchronised speed counters and stopwatch. Physics calibration on 7 manufacturer measurements.

MercedesPetrolFaster

Maybach SL 680 Monogram Series Roadster

585 hp · 800 Nm · 2,050 kg · 2025

VS
BMWPetrol

Z4 M40i G29

340 hp · 500 Nm · 1,555 kg · 2021

MotorwayRange & chargingPerformance0-100, top speedConsumptionAnnual TCO

Parameters and assumptions

Simulation

Start
Standing, straight line
Surface
Dry asphalt, 23°C
Wind
None
Driver
1 person, 75 kg

Calibration

Splits
0–100, 0–200 manufacturer
Power curve
Real measurement (Caralogy)
VMax
Manufacturer limited
Transmission
Losses integrated in model

Physics model calibrated on manufacturer splits. The limited top speed is not the real aerodynamic top speed of the vehicles.

Maybach SL 680 Monogram Series RoadsterZ4 M40i G29
0–100 km/h4,17 s−0,38 s4,54 s
400 m standing start12,05 s−0,67 s12,72 s
1,000 m standing start21,38 s−1,62 s23,00 s
Top speed (electronically limited)260 km/h+10 km/h250 km/h
Power-to-weight ratio3,50 kg/hpbetter ratio4,57 kg/hp

Watch the race

Standing-start drag race, calibrated on manufacturer splits. The gap shows at each stage.

MercedesPetrolMaybach SL 680 Monogram Series Roadster
Speed
0km/h
Timer
0,00s
Distance
0m
BMWPetrolZ4 M40i G29
Speed
0km/h
Timer
0,00s
Distance
0m
100 m
200 m
300 m
400 m
500 m
600 m
700 m
800 m
900 m
1000 m
0m → 1000m
Gap0m

Stage-by-stage comparison

Simulated performance at each stage. Winner in green.

PalierMaybach SL 680 Monogram Series RoadsterZ4 M40i G29
0–30 km/h1,22 s1,26 stight gap
0–50 km/h2,04 s2,11 stight gap
0–80 km/h3,32 s3,41 stight gap
0–100 km/h4,17 s4,54 s
0–120 km/h5,35 s5,97 s
0–160 km/h8,23 s9,81 s
0–200 km/h12,08 s15,62 s
400 m standing start12,05 s12,72 s
1,000 m standing start21,38 s23,00 s
Top speed limited260 km/h250 km/h

Under the bonnet

Manufacturer technical specifications. The power-to-weight ratio is the key physical factor in a drag race.

Mercedes

Maybach SL 680 Monogram Series Roadster

3,50kg/hpratio better by 1,07 kg/hp
CharacteristicValueDetail
Power585 hpPending
Torque800 Nm
Weight2 050 kgmanufacturer kerb weight
DrivetrainIntegrale (AWD)
GearboxUnknown
BMW

Z4 M40i G29

4,57kg/hpcompensated by −495 kg
CharacteristicValueDetail
Power340 hp6 cyl
Torque500 Nm
Weight1 555 kgmanufacturer kerb weight
DrivetrainZ4 M40i
GearboxEight-speed Steptronic transmission

The start: 0 to 100 km/h

Off the line, the Maybach SL 680 Monogram Series Roadster hits 100 km/h in 4.17 s versus 4.55 s for the Bmw Z4 M40i. At this point, the Maybach SL 680 Monogram Series Roadster leads by 0.38 s and sits roughly 2 m ahead.

From 100 km/h to 400 metres

At 200 metres, the Maybach SL 680 Monogram Series Roadster is doing 158 km/h against 147 km/h for the Bmw Z4 M40i. The gap is 0.32 s. The gap remains stable from the start.

At 400 metres standing start, the Maybach SL 680 Monogram Series Roadster crosses the line in 12.05 s versus 12.71 s. The 0.67 s gap represents roughly 33 m of track — a gap visible to the naked eye.

Beyond 400 metres: top speed comes into play

Past 400 metres, the Maybach SL 680 Monogram Series Roadster continues to build its lead. At 600 metres, it runs at 224 km/h versus 204 km/h. At 1,000 metres, the Maybach SL 680 Monogram Series Roadster finishes in 21.37 s versus 23.00 s, with a 1.62 s lead. Both vehicles have similar top speeds (260 vs 250 (i.e. 155 mph — industry threshold) km/h), preventing any comeback.

What the numbers don’t tell you

Both rivals are electronically governed, but not at the same level: the Maybach SL 680 Monogram Series Roadster is capped at 260 km/h, the Bmw Z4 M40i at 250 (i.e. 155 mph — industry threshold) km/h. This isn’t a physical engine limit — it’s a manufacturer choice, usually for tyre safety or homologation reasons. Neither car reaches its true aerodynamic top speed.

With two combustion powertrains, the difference comes down to power-to-weight ratio (3.50 kg/hp vs 4.57 kg/hp) and transmission (Unknown vs Automatic).

In European road use (130 km/h max), both vehicles reach the legal speed limit in under 6.79 seconds. The 0.38 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.

Compare with other alternatives

Swap one of the two models to explore an equivalent duel in the same segment.

Instead of Maybach SL 680 Monogram Series Roadster
Bmw M8 Competition ConvertibleBmw M850i xDrive ConvertibleBmw M850i xDrive Convertible
Instead of Z4 M40i G29
Bmw 840i xDrive ConvertibleBmw 230i ConvertibleBmw Z4 sDrive30i

Autres duels qui pourraient vous intéresser

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840i xDrive Convertible vs Maybach SL 680 Monogram Series Roadster

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420i Convertible vs Maybach SL 680 Monogram Series Roadster

BmwVSMercedes

420d Convertible vs Maybach SL 680 Monogram Series Roadster

Frequently asked questions

Sur 0–100 km/h, Maybach SL 680 Monogram Series Roadster gagne (4,17 s vs 4,54 s).

Maybach SL 680 Monogram Series Roadster passe de 0 à 100 km/h en 4,17 secondes (simulation calibrée).

Maybach SL 680 Monogram Series Roadster : 585 hp, ratio 3,50 kg/hp. Z4 M40i G29 : 340 hp, ratio 4,57 kg/hp.

Maybach SL 680 Monogram Series Roadster : 260 km/h. Z4 M40i G29 : 250 km/h.