Bmw M340i xDrive G20 vs Lexus IS 350 F Sport RWD : which one is faster?
0-100 km/h, 400 m, 1000 m, top speed — physics simulation calibrated on 7 measures.
Simulation de performance
Race simulation at real speed
CONFIDENCE 93%Calibrated physics simulation: SCx via VMax, power curves, Crr via WLTP, drivetrain losses. Manufacturer 0-100 is the calibration target. Confidence 93 %.
Bmw M340i xDrive vs IS 350 F Sport RWD: chronicle of a drag race at 250 km/h
The launch: 0 to 100 km/h
Off the line, the Bmw M340i xDrive hits 100 km/h in 4.46 s versus 5.94 s for the IS 350 F Sport RWD. At this point, the Bmw M340i xDrive leads by 1.48 s and sits roughly 18 m ahead.
From 100 km/h to 400 metres
At 200 metres, the Bmw M340i xDrive is doing 147 km/h against 136 km/h for the IS 350 F Sport RWD. The gap is 1.13 s. The challenger starts to claw back ground.
At 400 metres standing start, the Bmw M340i xDrive crosses the line in 12.56 s versus 14.07 s. The 1.51 s gap represents roughly 69 m of track — a gap visible to the naked eye.
Beyond 400 metres: top speed comes into play
Past 400 metres, the Bmw M340i xDrive continues to build its lead. At 600 metres, it runs at 207 km/h versus 188 km/h. At 1,000 metres, the Bmw M340i xDrive finishes in 22.70 s versus 25.26 s, with a 2.56 s lead. Both vehicles have similar top speeds (250 vs 240 km/h), preventing any comeback.
What the numbers don’t tell you
The Bmw M340i xDrive features all-wheel drive (AWD) against the IS 350 F Sport RWD’s RWD. At low speeds (0-30, 0-50, 0-80 km/h), AWD doubles the driven contact area: all four wheels transmit torque to the road, virtually eliminating wheelspin at launch. This traction advantage is decisive in the range where the motor delivers peak torque, before power and aerodynamics take over.
Both rivals are electronically governed, but not at the same level: the Bmw M340i xDrive is capped at 250 km/h, the IS 350 F Sport RWD at 240 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 (4.47 kg/hp vs 5.43 kg/hp) and transmission (Automatic vs Automatic).
In European road use (130 km/h max), both vehicles reach the legal speed limit in under 8.71 seconds. The 1.48 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.
Bmw M340i xDrive has a clear edge over the Lexus IS 350 F Sport RWD to 100 km/h. This difference is clearly noticeable in spirited driving and widens on standing starts.