Porsche 911 Targa 4S 991.2 vs Alpine A110 GT 300: which is truly faster?

Off the line, the A110 GT 300 hits 100 km/h in 3.92 s versus 4.05 s for the 911 Targa 4S. At this point, the A110 GT 300 leads by 0.13 s and sits roughly 1 m ahead.

At 200 metres, the A110 GT 300 is doing 157 km/h against 158 km/h for the 911 Targa 4S. The gap is 0.06 s. The gap remains stable from the start.

At 400 metres standing start, the A110 GT 300 crosses the line in 11.96 s versus 11.99 s. The 0.03 s gap represents roughly 2 m of track

Past 400 metres, the situation changes. The A110 GT 300 maxes out at 272 km/h while the 911 Targa 4S keeps accelerating towards 303 km/h. At 600 metres, the gap has dropped to 0.02 s.

Around 550 metres, both vehicles are level. This is the inversion point: the 911 Targa 4S overcomes its launch deficit thanks to a 31 km/h higher top speed.

At 1,000 metres, the 911 Targa 4S finishes in 21.58 s versus 21.76 s. The 0.18 s delta shows an extremely tight race.

Electronically capped at 303 km/h, the 911 Targa 4S never reaches its natural aerodynamic ceiling in this duel. That’s not a physical limit of the motor - it’s a deliberate manufacturer decision, typically tied to standard-fit tyre ratings or model-range positioning.

With two combustion powertrains, the difference comes down to power-to-weight ratio (3.71 kg/hp vs 3.65 kg/hp) and transmission (Automatic vs Automatic).

In European road use (130 km/h max), both vehicles reach the legal speed limit in under 5.87 seconds. The 0.13 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.