Over 0–100 km/h, 420i Convertible G22 wins (8,14 s vs 9,12 s).
Simulated drag race 0 → 1,000 m in real time. Synchronised speed counters and stopwatch. Physics calibration on 7 manufacturer measurements.
8.14 s
9.12 s
| Measure | 420i Convertible G22 | 218d Convertible F22 | Gap |
|---|---|---|---|
| 0–100 km/h | 8.14 s | 9.12 s | 0.98 s · 420i Convertible G22 |
| 400 m standing start | 15.97 s | 16.65 s | 0.68 s · 420i Convertible G22 |
| 1,000 m standing start | 28.97 s | 30.48 s | 1.51 s · 420i Convertible G22 |
| Top speed (electronically limited) | 236 km/h | 208 km/h | 28 km/h · 420i Convertible G22 |
| Power-to-weight ratio | 9.18 kg/hp | 10.43 kg/hp | better ratio · 420i Convertible G22 |
Standing-start drag race, calibrated on manufacturer splits. The gap shows at each stage.
| Stage | 420i Convertible G22 | 218d Convertible F22 |
|---|---|---|
| 0–30 km/h | 1.81 s | 1.81 s |
| 0–50 km/h | 3.07 s · tight gap | 3.17 s |
| 0–80 km/h | 5.69 s | 6.35 s |
| 0–100 km/h | 8.14 s | 9.12 s |
| 0–120 km/h | 11.24 s | 12.95 s |
| 0–160 km/h | 20.26 s | 24.66 s |
| 0–200 km/h | 36.93 s | 57.98 s |
| 400 m standing start | 15.97 s | 16.65 s |
| 1,000 m standing start | 28.97 s | 30.48 s |
| Top speed | 236 km/h | 208 km/h |
Physics model calibrated on manufacturer splits. The limited top speed is not the real aerodynamic top speed of the vehicles.
Manufacturer technical specifications. The power-to-weight ratio is the key physical factor in a drag race.
| Characteristic | Value | Detail |
|---|---|---|
| Power | 184 hp | 4 cyl |
| Torque | 300 Nm | |
| Weight | 1 690 kg | manufacturer kerb weight |
| Drivetrain | - | |
| Gearbox | Eight-speed Steptronic transmission |
| Characteristic | Value | Detail |
|---|---|---|
| Power | 150 hp | 4 cyl |
| Torque | 320 Nm | |
| Weight | 1 565 kg | manufacturer kerb weight |
| Drivetrain | - | |
| Gearbox | 6-speed manual (8-speed Steptronic) |
Off the line, the 420i Convertible hits 100 km/h in 8.14 s versus 9.12 s for the 218d Convertible. At this point, the 420i Convertible leads by 0.98 s and sits roughly 7 m ahead.
At 200 metres, the 420i Convertible is doing 115 km/h against 109 km/h for the 218d Convertible. The gap is 0.37 s. The challenger starts to claw back ground.
At 400 metres standing start, the 420i Convertible crosses the line in 15.96 s versus 16.65 s. The 0.68 s gap represents roughly 26 m of track - two to three car lengths.
Past 400 metres, the 420i Convertible continues to build its lead. At 600 metres, it runs at 161 km/h versus 152 km/h. At 1,000 metres, the 420i Convertible finishes in 28.97 s versus 30.48 s, with a 1.51 s lead.
Both rivals are electronically governed, but not at the same level: the 420i Convertible is capped at 236 km/h, the 218d Convertible at 208 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 (9.18 kg/hp vs 10.43 kg/hp) and transmission (Automatic vs Automatic).
In European road use (130 km/h max), both vehicles reach the legal speed limit in under 15.20 seconds. The 0.98 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.
Over 0–100 km/h, 420i Convertible G22 wins (8,14 s vs 9,12 s).
420i Convertible G22 goes from 0 to 100 km/h in 8,14 seconds (calibrated simulation).
420i Convertible G22: 184 hp, ratio 9,18 kg/hp. 218d Convertible F22: 150 hp, ratio 10,43 kg/hp.
420i Convertible G22: 236 km/h. 218d Convertible F22: 208 km/h.