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  • Specs128ti · 218i

BMW 128ti F40 vs BMW 218i Convertible F44: 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.

compact · 2020 vs 2020 · Methodology
BMWPetrolFaster

128ti F40

265 hp · 400 Nm · 1,445 kg · 2020

VS
BMWPetrol

218i Convertible F44

136 hp · 220 Nm · 1,560 kg · 2020

Result · 0–100 km/h

ABMW 128ti F40

6.27 s

Gap3.07 sin favour of 128ti
BBMW 218i Convertible F44

9.34 s

Summary · Caralogy simulation
Measure128ti F40218i Convertible F44Gap
0–100 km/h6.27 s9.34 s3.07 s · 128ti F40
400 m standing start14.44 s16.79 s2.35 s · 128ti F40
1,000 m standing start25.87 s30.47 s4.60 s · 128ti F40
Top speed (electronically limited)250 km/h207 km/h43 km/h · 128ti F40
Power-to-weight ratio5.45 kg/hp11.47 kg/hpbetter ratio · 128ti F40

Watch the race

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

BMWPetrol128ti F40
Speed
0km/h
Timer
0,00s
Distance
0m
BMWPetrol218i Convertible F44
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.
Stage128ti F40218i Convertible F44
0–30 km/h1.81 s2.04 s
0–50 km/h3.01 s3.42 s
0–80 km/h4.76 s6.56 s
0–100 km/h6.27 s9.34 s
0–120 km/h8.20 s12.87 s
0–160 km/h13.63 s24.00 s
0–200 km/h22.97 s49.95 s
400 m standing start14.44 s16.79 s
1,000 m standing start25.87 s30.47 s
Top speed limited250 km/h207 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

128ti F40

5,45kg/hpratio better by 6,02 kg/hp
CharacteristicValueDetail
Power265 hp4 cyl
Torque400 Nm
Weight1 445 kgmanufacturer kerb weight
Drivetrain-
GearboxEight-speed Steptronic Sport transmission
BMW

218i Convertible F44

11,47kg/hpcompensated by −115 kg
CharacteristicValueDetail
Power136 hp4 cyl
Torque220 Nm
Weight1 560 kgmanufacturer kerb weight
Drivetrain-
Gearbox6-speed manual (8-speed Steptronic transmission)

The start: 0 to 100 km/h

Off the line, the 128ti hits 100 km/h in 6.27 s versus 9.34 s for the 218i Convertible. At this point, the 128ti leads by 3.07 s and sits roughly 15 m ahead.

From 100 km/h to 400 metres

At 200 metres, the 128ti is doing 132 km/h against 110 km/h for the 218i Convertible. The gap is 1.36 s. The challenger starts to claw back ground.

At 400 metres standing start, the 128ti crosses the line in 14.44 s versus 16.78 s. The 2.35 s gap represents roughly 86 m of track - a gap visible to the naked eye.

Beyond 400 metres: top speed comes into play

Past 400 metres, the 128ti continues to build its lead. At 600 metres, it runs at 184 km/h versus 154 km/h. At 1,000 metres, the 128ti finishes in 25.86 s versus 30.47 s, with a 4.60 s lead.

What the numbers don’t tell you

Both rivals are electronically governed, but not at the same level: the 128ti is capped at 250 (i.e. 155 mph - industry threshold) km/h, the 218i Convertible at 207 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 (5.45 kg/hp vs 11.47 kg/hp) and transmission (Automatic vs Automatic).

In European road use (130 km/h max), both vehicles reach the legal speed limit in under 15.16 seconds. The 3.07 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.

Other duels you might be interested in

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128ti vs A3 allstreet

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A3 allstreet vs 218i Convertible

BMWVSAudi

128ti vs A3 Sedan

AudiVSBMW

A3 allstreet vs 218i Convertible

Frequently asked questions

Over 0–100 km/h, 128ti F40 wins (6,27 s vs 9,34 s).

128ti F40 goes from 0 to 100 km/h in 6,27 seconds (calibrated simulation).

128ti F40: 265 hp, ratio 5,45 kg/hp. 218i Convertible F44: 136 hp, ratio 11,47 kg/hp.

128ti F40: 250 km/h. 218i Convertible F44: 207 km/h.