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  • Specs911 · Boxster

Porsche 911 GT3 991.1 vs Porsche Boxster: 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.

sports car · 2011 vs 2012 · Methodology
PorschePetrolFaster

911 GT3 991.1

441 hp · 430 Nm · 1,395 kg · 2011

VS
PorschePetrol

Boxster

259 hp · 290 Nm · 1,335 kg · 2012

Result · 0–100 km/h

APorsche 911 GT3 991.1

4.08 s

Gap1.52 sin favour of 911 GT3
BPorsche Boxster

5.60 s

Summary · Caralogy simulation
Measure911 GT3 991.1BoxsterGap
0–100 km/h4.08 s5.60 s1.52 s · 911 GT3 991.1
400 m standing start11.86 s13.86 s2.00 s · 911 GT3 991.1
1,000 m standing start21.24 s25.21 s3.97 s · 911 GT3 991.1
Top speed (electronically limited)313 km/h252 km/h61 km/h · 911 GT3 991.1
Power-to-weight ratio3.16 kg/hp5.15 kg/hpbetter ratio · 911 GT3 991.1

Watch the race

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

PorschePetrol911 GT3 991.1
Speed
0km/h
Timer
0,00s
Distance
0m
PorschePetrolBoxster
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.
Stage911 GT3 991.1Boxster
0–30 km/h1.07 s1.42 s
0–50 km/h1.78 s2.35 s
0–80 km/h3.11 s4.14 s
0–100 km/h4.08 s5.60 s
0–120 km/h5.05 s7.55 s
0–160 km/h8.00 s12.82 s
0–200 km/h12.09 s21.85 s
400 m standing start11.86 s13.86 s
1,000 m standing start21.24 s25.21 s
Top speed313 km/h252 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.

Porsche

911 GT3 991.1

3,16kg/hpratio better by 1,99 kg/hp
CharacteristicValueDetail
Power441 hpB6
Torque430 Nm
Weight1 395 kgmanufacturer kerb weight
DrivetrainPropulsion
GearboxMANUAL
Porsche

Boxster

5,15kg/hpcompensated by −60 kg
CharacteristicValueDetail
Power259 hpEngine block and cylinder heads formed in aluminum
Torque290 Nm
Weight1 335 kgmanufacturer kerb weight
DrivetrainPropulsion
Gearbox6 speed standard

The start: 0 to 100 km/h

Off the line, the 911 GT3 hits 100 km/h in 4.08 s versus 5.60 s for the Boxster. At this point, the 911 GT3 leads by 1.52 s and sits roughly 14 m ahead.

From 100 km/h to 400 metres

At 200 metres, the 911 GT3 is doing 158 km/h against 134 km/h for the Boxster. The gap is 1.24 s. The challenger starts to claw back ground.

At 400 metres standing start, the 911 GT3 crosses the line in 11.85 s versus 13.86 s. The 2.01 s gap represents roughly 89 m of track - a gap visible to the naked eye.

Beyond 400 metres: top speed comes into play

Past 400 metres, the 911 GT3 continues to build its lead. At 600 metres, it runs at 225 km/h versus 185 km/h. At 1,000 metres, the 911 GT3 finishes in 21.23 s versus 25.21 s, with a 3.97 s lead.

What the numbers don’t tell you

Electronically capped at 262 km/h, the Boxster 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 (3.16 kg/hp vs 5.15 kg/hp) and transmission (Manual vs Unknown).

In European road use (130 km/h max), both vehicles reach the legal speed limit in under 8.61 seconds. The 1.52 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.

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911 GT3 vs Z4 M40i

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Boxster vs Z4 sDrive30i

Frequently asked questions

Over 0–100 km/h, 911 GT3 991.1 wins (4,08 s vs 5,60 s).

911 GT3 991.1 goes from 0 to 100 km/h in 4,08 seconds (calibrated simulation).

911 GT3 991.1: 441 hp, ratio 3,16 kg/hp. Boxster: 259 hp, ratio 5,15 kg/hp.

911 GT3 991.1: 313 km/h. Boxster: 252 km/h.