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A118dDieselvsB218iPetrol
  • MotorwayMotorwayRange and charging
  • PerformancePerformance0-100, top speed
  • ConsumptionConsumptionYearly cost
  • Specs118d · 218i

BMW 118d F40 vs BMW 218i Convertible F22: 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 2018 · Methodology
BMWDieselFaster

118d F40

150 hp · 350 Nm · 1,405 kg · 2020

VS
BMWPetrol

218i Convertible F22

136 hp · 220 Nm · 1,500 kg · 2018

Result · 0–100 km/h

ABMW 118d F40

8.65 s

Gap0.80 sin favour of 118d
BBMW 218i Convertible F22

9.45 s

Summary · Caralogy simulation
Measure118d F40218i Convertible F22Gap
0–100 km/h8.65 s9.45 s0.80 s · 118d F40
400 m standing start16.41 s16.81 s0.40 s · 118d F40
1,000 m standing start29.83 s31.02 s1.19 s · 118d F40
Top speed (electronically limited)218 km/h207 km/h11 km/h · 118d F40
Power-to-weight ratio9.37 kg/hp11.03 kg/hpbetter ratio · 118d F40

Watch the race

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

BMWDiesel118d F40
Speed
0km/h
Timer
0,00s
Distance
0m
BMWPetrol218i Convertible F22
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.
Stage118d F40218i Convertible F22
0–30 km/h2.07 s1.53 s
0–50 km/h3.39 s3.05 s
0–80 km/h6.08 s6.46 s
0–100 km/h8.65 s9.45 s
0–120 km/h11.98 s13.93 s
0–160 km/h22.37 s27.12 s
0–200 km/h47.11 s61.53 s
400 m standing start16.41 s16.81 s
1,000 m standing start29.83 s31.02 s
Top speed218 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

118d F40

9,37kg/hpratio better by 1,66 kg/hp
CharacteristicValueDetail
Power150 hp4 cyl
Torque350 Nm
Weight1 405 kgmanufacturer kerb weight
Drivetrain-
GearboxSix-speed manual (8-speed Steptronic transmission)
BMW

218i Convertible F22

11,03kg/hpcompensated by −95 kg
CharacteristicValueDetail
Power136 hp3 cyl
Torque220 Nm
Weight1 500 kgmanufacturer kerb weight
Drivetrain-
Gearbox6-speed manual (8-speed Steptronic)

The start: 0 to 100 km/h

Off the line, the 118d hits 100 km/h in 8.65 s versus 9.45 s for the 218i Convertible. Despite the faster sprint time, the 218i Convertible is 3 m further along the track at this moment: stronger low-speed acceleration offsets a slower run beyond 100 km/h.

From 100 km/h to 400 metres

At 200 metres, the 118d is doing 113 km/h against 107 km/h for the 218i Convertible. The gap is 0.02 s. The challenger starts to claw back ground.

At 400 metres standing start, the 118d crosses the line in 16.41 s versus 16.81 s. The 0.40 s gap represents roughly 15 m of track - two to three car lengths.

Beyond 400 metres: top speed comes into play

Past 400 metres, the 118d continues to build its lead. At 600 metres, it runs at 157 km/h versus 148 km/h. At 1,000 metres, the 118d finishes in 29.82 s versus 31.02 s, with a 1.19 s lead. Both vehicles have similar top speeds (218 vs 207 km/h), preventing any comeback.

What the numbers don’t tell you

Both rivals are electronically governed, but not at the same level: the 118d is capped at 218 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 (9.37 kg/hp vs 11.03 kg/hp) and transmission (Automatic vs Automatic).

In European road use (130 km/h max), both vehicles reach the legal speed limit in under 16.40 seconds. The 0.80 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 118d F40
Audi A3 allstreetAudi A3 allstreetAudi A3 allstreet

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Frequently asked questions

Over 0–100 km/h, 118d F40 wins (8,65 s vs 9,45 s).

118d F40 goes from 0 to 100 km/h in 8,65 seconds (calibrated simulation).

118d F40: 150 hp, ratio 9,37 kg/hp. 218i Convertible F22: 136 hp, ratio 11,03 kg/hp.

118d F40: 218 km/h. 218i Convertible F22: 207 km/h.