Skip to main content
CaralogyCaralogy
HomeBrandsRoad TripBudgetDuelGuides
Caralogy

The car comparison platform. Physics simulation, road trips, real costs.

Navigation
All brandsCar duelRunning costsMotorwayMethodology
Simulators
Motorway simulatorRunning costsPerformance duel
Brands
VolkswagenBMWMercedesToyotaTeslaAudi
FRENDEESIT
© 2026 Caralogy · All rights reserved
  1. Home
  2. /Duel
  3. /Sedans
ARSvsBGLCBEV
  • MotorwayMotorwayRange and charging
  • PerformancePerformance0-100, top speed
  • ConsumptionConsumptionYearly cost
  • SpecsRS · GLC

Audi RS e-tron GT vs Mercedes GLC 400 4MATIC X254: 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.

grand tourer · 2022 vs 2025 · Methodology
AudiBEVFaster

RS e-tron GT

671 hp · 830 Nm · 2,395 kg · 2022

VS
MercedesBEV

GLC 400 4MATIC X254

489 hp · 800 Nm · 2,535 kg · 2025

Result · 0–100 km/h

AAudi RS e-tron GT

3.33 s

Gap1.00 sin favour of RS e-tron GT
BMercedes GLC 400 4MATIC X254

4.33 s

Summary · Caralogy simulation
MeasureRS e-tron GTGLC 400 4MATIC X254Gap
0–100 km/h3.33 s4.33 s1.00 s · RS e-tron GT
400 m standing start11.32 s12.66 s1.34 s · RS e-tron GT
1,000 m standing start20.60 s23.35 s2.75 s · RS e-tron GT
Top speed (electronically limited)250 km/h210 km/h40 km/h · RS e-tron GT
Power-to-weight ratio3.57 kg/hp5.18 kg/hpbetter ratio · RS e-tron GT

Watch the race

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

AudiBEVRS e-tron GT
Speed
0km/h
Timer
0,00s
Distance
0m
MercedesBEVGLC 400 4MATIC X254
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.
StageRS e-tron GTGLC 400 4MATIC X254
0–30 km/h0.95 s1.17 s
0–50 km/h1.59 s1.94 s
0–80 km/h2.55 s3.21 s
0–100 km/h3.33 s4.33 s
0–120 km/h4.32 s5.77 s
0–160 km/h7.15 s10.06 s
0–200 km/h11.16 s16.35 s
400 m standing start11.32 s12.66 s
1,000 m standing start20.60 s23.35 s
Top speed limited250 km/h210 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.

Audi

RS e-tron GT

3,57kg/hpratio better by 1,61 kg/hp
CharacteristicValueDetail
Power671 hpPending
Torque830 Nm
Weight2 395 kgmanufacturer kerb weight
DrivetrainIntegrale (AWD)
GearboxUnknown
Mercedes

GLC 400 4MATIC X254

5,18kg/hpcompensated by −140 kg
CharacteristicValueDetail
Power489 hpPending
Torque800 Nm
Weight2 535 kgmanufacturer kerb weight
DrivetrainIntegrale (AWD)
GearboxUnknown

The start: 0 to 100 km/h

Off the line, the RS e-tron GT hits 100 km/h in 3.33 s versus 4.34 s for the GLC 400 4MATIC. At this point, the RS e-tron GT leads by 1.01 s and sits roughly 9 m ahead.

From 100 km/h to 400 metres

At 200 metres, the RS e-tron GT is doing 163 km/h against 145 km/h for the GLC 400 4MATIC. The gap is 0.85 s. The challenger starts to claw back ground.

At 400 metres standing start, the RS e-tron GT crosses the line in 11.31 s versus 12.66 s. The 1.34 s gap represents roughly 65 m of track - a gap visible to the naked eye.

Beyond 400 metres: top speed comes into play

Past 400 metres, the RS e-tron GT continues to build its lead. At 600 metres, it runs at 227 km/h versus 201 km/h. At 1,000 metres, the RS e-tron GT finishes in 20.60 s versus 23.35 s, with a 2.75 s lead.

What the numbers don’t tell you

Both rivals are electronically governed, but not at the same level: the RS e-tron GT is capped at 250 (i.e. 155 mph - industry threshold) km/h, the GLC 400 4MATIC at 210 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 electric powertrains, the difference comes down to power-to-weight ratio (3.57 kg/hp vs 5.18 kg/hp) and transmission (Unknown vs Unknown).

In European road use (130 km/h max), both vehicles reach the legal speed limit in under 6.65 seconds. The 1.01 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.

Other duels you might be interested in

AudiVSPorsche

RS e-tron GT vs Taycan Turbo

MercedesVSFord

GLC 400 4MATIC vs Mustang Mach-E GT

AudiVSPorsche

RS e-tron GT vs Taycan Turbo Cross Turismo

MercedesVSXpeng

GLC 400 4MATIC vs G6

Frequently asked questions

Over 0–100 km/h, RS e-tron GT wins (3,33 s vs 4,33 s).

RS e-tron GT goes from 0 to 100 km/h in 3,33 seconds (calibrated simulation).

RS e-tron GT: 671 hp, ratio 3,57 kg/hp. GLC 400 4MATIC X254: 489 hp, ratio 5,18 kg/hp.

RS e-tron GT: 250 km/h. GLC 400 4MATIC X254: 210 km/h.