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BMW i4 eDrive35 G26 vs BMW Z4 sDrive30i 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.

saloon · 2024 vs 2021 · Methodology
BMWBEV

i4 eDrive35 G26

286 hp · 400 Nm · 2,000 kg · 2024

VS
BMWPetrolFaster

Z4 sDrive30i G29

258 hp · 400 Nm · 1,430 kg · 2021

Result · 0–100 km/h

ABMW i4 eDrive35 G26

6.08 s

Gap0.63 sin favour of Z4 sDrive30i
BBMW Z4 sDrive30i G29

5.45 s

Summary · Caralogy simulation
Measurei4 eDrive35 G26Z4 sDrive30i G29Gap
0–100 km/h6.08 s5.45 s0.63 s · Z4 sDrive30i G29
400 m standing start14.38 s13.71 s0.67 s · Z4 sDrive30i G29
1,000 m standing start26.26 s24.82 s1.44 s · Z4 sDrive30i G29
Top speed (electronically limited)190 km/h250 km/h60 km/h · Z4 sDrive30i G29
Power-to-weight ratio6.99 kg/hp5.54 kg/hpbetter ratio · Z4 sDrive30i G29

Watch the race

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

BMWBEVi4 eDrive35 G26
Speed
0km/h
Timer
0,00s
Distance
0m
BMWPetrolZ4 sDrive30i 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. Best value in bold.
Stagei4 eDrive35 G26Z4 sDrive30i G29
0–30 km/h1.69 s1.46 s
0–50 km/h2.81 s2.42 s
0–80 km/h4.56 s4.03 s
0–100 km/h6.08 s5.45 s
0–120 km/h8.04 s7.26 s
0–160 km/h14.28 s12.26 s
0–200 km/h-20.34 s
400 m standing start14.38 s13.71 s
1,000 m standing start26.26 s24.82 s
Top speed limited190 km/h250 km/h

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.

Under the bonnet

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

BMW

i4 eDrive35 G26

6,99kg/hpcompensated by −570 kg
CharacteristicValueDetail
Power286 hpPending
Torque400 Nm
Weight2 000 kgmanufacturer kerb weight
Drivetrain-
GearboxAutomatic transmission, single-speed with fixed ratio
BMW

Z4 sDrive30i G29

5,54kg/hpratio better by 1,45 kg/hp
CharacteristicValueDetail
Power258 hp4 cyl
Torque400 Nm
Weight1 430 kgmanufacturer kerb weight
Drivetrain-
GearboxEight-speed Steptronic transmission

The start: 0 to 100 km/h

Off the line, the Z4 sDrive30i hits 100 km/h in 5.45 s versus 6.08 s for the i4 eDrive35. Despite lacking instant torque, 258 hp of power compensates. At this point, the Z4 sDrive30i leads by 0.63 s and sits roughly 9 m ahead.

From 100 km/h to 400 metres

At 200 metres, the Z4 sDrive30i is doing 136 km/h against 131 km/h for the i4 eDrive35. The gap is 0.46 s. The challenger starts to claw back ground.

At 400 metres standing start, the Z4 sDrive30i crosses the line in 13.70 s versus 14.38 s. The 0.67 s gap represents roughly 30 m of track - two to three car lengths.

Beyond 400 metres: top speed comes into play

Past 400 metres, the Z4 sDrive30i continues to build its lead. At 600 metres, it runs at 189 km/h versus 179 km/h. At 1,000 metres, the Z4 sDrive30i finishes in 24.81 s versus 26.26 s, with a 1.45 s lead.

What the numbers don’t tell you

Both rivals are electronically governed, but not at the same level: the i4 eDrive35 is capped at 190 km/h, the Z4 sDrive30i 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.

Instant electric torque gives an advantage off the line. The higher top speed of the combustion engine gives an advantage over longer distances. The distance at which one catches the other depends on the top speed differential.

In European road use (130 km/h max), both vehicles reach the legal speed limit in under 9.27 seconds. The 0.63 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.

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Frequently asked questions

Over 0–100 km/h, Z4 sDrive30i G29 wins (5,45 s vs 6,08 s).

i4 eDrive35 G26 goes from 0 to 100 km/h in 6,08 seconds (calibrated simulation).

i4 eDrive35 G26: 286 hp, ratio 6,99 kg/hp. Z4 sDrive30i G29: 258 hp, ratio 5,54 kg/hp.

i4 eDrive35 G26: 190 km/h. Z4 sDrive30i G29: 250 km/h.