Mercedes GLC 400 4MATIC with EQ Technology X254 vs Cupra Terramar: which is truly faster?

Off the line, the GLC 400 4MATIC with EQ Technology hits 100 km/h in 4.34 s versus 8.31 s for the Terramar. At this point, the GLC 400 4MATIC with EQ Technology leads by 3.98 s and sits roughly 29 m ahead.

At 200 metres, the GLC 400 4MATIC with EQ Technology is doing 145 km/h against 116 km/h for the Terramar. The gap is 2.50 s. The challenger starts to claw back ground.

At 400 metres standing start, the GLC 400 4MATIC with EQ Technology crosses the line in 12.66 s versus 16.25 s. The 3.59 s gap represents roughly 135 m of track - a gap visible to the naked eye.

Past 400 metres, the GLC 400 4MATIC with EQ Technology continues to build its lead. At 600 metres, it runs at 201 km/h versus 160 km/h. At 1,000 metres, the GLC 400 4MATIC with EQ Technology finishes in 23.35 s versus 29.41 s, with a 6.06 s lead. Both vehicles have similar top speeds (210 vs 214 km/h), preventing any comeback.

The GLC 400 4MATIC with EQ Technology features all-wheel drive (AWD) against the Terramar’s FWD. 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.

Electronically capped at 210 km/h, the GLC 400 4MATIC with EQ Technology 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 plug-in hybrid powertrains, the difference comes down to power-to-weight ratio (5.18 kg/hp vs 9.00 kg/hp) and transmission (Unknown vs Automatic).

In European road use (130 km/h max), both vehicles reach the legal speed limit in under 13.30 seconds. The 3.98 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.