Over 0–100 km/h, IS 300 AWD wins (7,70 s vs 8,14 s).
Simulated drag race 0 → 1,000 m in real time. Synchronised speed counters and stopwatch. Physics calibration on 7 manufacturer measurements.
| Measure | IS 300 AWD | 420i Convertible G22 | Gap |
|---|---|---|---|
| 0–100 km/h | 7.70 s | 8.14 s | 0.44 s · IS 300 AWD |
| 400 m standing start | 15.66 s | 15.97 s | 0.31 s · IS 300 AWD |
| 1,000 m standing start | 27.75 s | 28.97 s | 1.22 s · IS 300 AWD |
| Top speed (electronically limited) | 210 km/h | 236 km/h | 26 km/h · 420i Convertible G22 |
| Power-to-weight ratio | 7.08 kg/hp | 9.18 kg/hp | better ratio · IS 300 AWD |
Standing-start drag race, calibrated on manufacturer splits. The gap shows at each stage.
| Stage | IS 300 AWD | 420i Convertible G22 |
|---|---|---|
| 0–30 km/h | 2.13 s | 1.81 s |
| 0–50 km/h | 3.60 s | 3.07 s |
| 0–80 km/h | 5.73 s | 5.69 s · tight gap |
| 0–100 km/h | 7.70 s | 8.14 s |
| 0–120 km/h | 10.18 s | 11.24 s |
| 0–160 km/h | 16.98 s | 20.26 s |
| 0–200 km/h | 28.19 s | 36.93 s |
| 400 m standing start | 15.66 s | 15.97 s |
| 1,000 m standing start | 27.75 s | 28.97 s |
| Top speed | 210 km/h | 236 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 | 245 hp | Pending |
| Torque | 350 Nm | |
| Weight | 1 735 kg | manufacturer kerb weight |
| Drivetrain | Integrale (AWD) | |
| Gearbox | 8-speed automatic |
| Characteristic | Value | Detail |
|---|---|---|
| Power | 184 hp | 4 cyl |
| Torque | 300 Nm | |
| Weight | 1 690 kg | manufacturer kerb weight |
| Drivetrain | - | |
| Gearbox | Eight-speed Steptronic transmission |
Off the line, the IS 300 AWD hits 100 km/h in 7.70 s versus 8.14 s for the 420i Convertible. Despite the faster sprint time, the 420i Convertible is 6 m further along the track at this moment: stronger low-speed acceleration offsets a slower run beyond 100 km/h.
At 200 metres, the 420i Convertible is doing 115 km/h against 122 km/h for the IS 300 AWD. The gap is 0.05 s. The challenger starts to claw back ground.
At 400 metres standing start, the IS 300 AWD crosses the line in 15.66 s versus 15.96 s. The 0.31 s gap represents roughly 12 m of track - two to three car lengths.
Past 400 metres, the IS 300 AWD continues to build its lead. At 600 metres, it runs at 173 km/h versus 161 km/h. At 1,000 metres, the IS 300 AWD finishes in 27.75 s versus 28.97 s, with a 1.22 s lead. Despite a higher top speed (236 km/h), the 420i Convertible never recovers its launch deficit.
Both rivals are electronically governed, but not at the same level: the IS 300 AWD is capped at 210 km/h, the 420i Convertible at 236 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 (7.08 kg/hp vs 9.18 kg/hp) and transmission (Automatic vs Automatic).
In European road use (130 km/h max), both vehicles reach the legal speed limit in under 13.10 seconds. The 0.44 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.
Over 0–100 km/h, IS 300 AWD wins (7,70 s vs 8,14 s).
IS 300 AWD goes from 0 to 100 km/h in 7,70 seconds (calibrated simulation).
IS 300 AWD: 245 hp, ratio 7,08 kg/hp. 420i Convertible G22: 184 hp, ratio 9,18 kg/hp.
IS 300 AWD: 210 km/h. 420i Convertible G22: 236 km/h.