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Home›Duel›Porsche 911 vs BMW Z4

Performance comparison

Porsche 911 Carrera 4S (Manual) 991.1 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.

PorschePetrolFaster

911 Carrera 4S (Manual) 991.1

390 hp · 420 Nm · 1,480 kg · 2011

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.

911 Carrera 4S (Manual) 991.1Z4 M40i G29
0–100 km/h4,66 s4,54 s+0,11 s
400 m standing start12,67 s−0,05 s12,72 s
1,000 m standing start22,62 s−0,38 s23,00 s
Top speed (electronically limited)293 km/h+43 km/h250 km/h
Power-to-weight ratio3,79 kg/hpbetter ratio4,57 kg/hp

Watch the race

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

PorschePetrol911 Carrera 4S (Manual) 991.1
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.

Palier911 Carrera 4S (Manual) 991.1Z4 M40i G29
0–30 km/h1,25 s1,26 stight gap
0–50 km/h2,08 s2,11 stight gap
0–80 km/h3,66 s3,41 s
0–100 km/h4,66 s4,54 stight gap
0–120 km/h6,13 s5,97 s
0–160 km/h9,39 s9,81 s
0–200 km/h14,37 s15,62 s
400 m standing start12,67 s12,72 stight gap
1,000 m standing start22,62 s23,00 s
Top speed limited293 km/h250 km/h

Under the bonnet

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

Porsche

911 Carrera 4S (Manual) 991.1

3,79kg/hpratio better by 0,78 kg/hp
CharacteristicValueDetail
Power390 hpB6
Torque420 Nm
Weight1 480 kgmanufacturer kerb weight
DrivetrainIntegrale (AWD)
GearboxMANUAL
BMW

Z4 M40i G29

4,57kg/hpcompensated by −75 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 Bmw Z4 M40i hits 100 km/h in 4.55 s versus 4.66 s for the 911 Carrera 4S (Manual). At this point, the Bmw Z4 M40i leads by 0.11 s and sits roughly 2 m ahead.

From 100 km/h to 400 metres

At 200 metres, the Bmw Z4 M40i is doing 147 km/h against 149 km/h for the 911 Carrera 4S (Manual). The gap is 0.06 s. The gap remains stable from the start.

At 400 metres standing start, the 911 Carrera 4S (Manual) crosses the line in 12.67 s versus 12.71 s. The 0.05 s gap represents roughly 3 m of track — barely a car length.

Beyond 400 metres: top speed comes into play

Past 400 metres, the 911 Carrera 4S (Manual) continues to build its lead. At 600 metres, it runs at 211 km/h versus 204 km/h. At 1,000 metres, the 911 Carrera 4S (Manual) finishes in 22.62 s versus 23.00 s, with a 0.38 s lead.

What the numbers don’t tell you

Both rivals are electronically governed, but not at the same level: the 911 Carrera 4S (Manual) is capped at 297 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 (3.79 kg/hp vs 4.57 kg/hp) and transmission (Manual vs Automatic).

In European road use (130 km/h max), both vehicles reach the legal speed limit in under 6.91 seconds. The 0.11 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 911 Carrera 4S (Manual) 991.1
Ford Mustang Dark Horse 500Bmw M4Alpine A110 GT 300
Instead of Z4 M40i G29
Porsche 911 Carrera 4S CabrioletPorsche 911 Carrera S CabrioletPorsche 911 Carrera Cabriolet

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Frequently asked questions

Sur 0–100 km/h, Z4 M40i G29 gagne (4,54 s vs 4,66 s).

911 Carrera 4S (Manual) 991.1 passe de 0 à 100 km/h en 4,66 secondes (simulation calibrée).

911 Carrera 4S (Manual) 991.1 : 390 hp, ratio 3,79 kg/hp. Z4 M40i G29 : 340 hp, ratio 4,57 kg/hp.

911 Carrera 4S (Manual) 991.1 : 293 km/h. Z4 M40i G29 : 250 km/h.