Comparing All the Powertrains Available in the 2026 GLC — From Fuel Efficiency to Raw Power

Shopping the 2026 GLC lineup means picking a powertrain philosophy, not just a trim level. Quebec drivers comparing daily fuel costs, electric-only range, and outright power have four distinct answers: the GLC300 4MATIC, GLC350e 4MATIC, GLC43 4MATIC+, and GLC63 S 4MATIC+ E Performance. Each pairs the same 2.0L turbocharged four-cylinder with a different degree of electrification, and that single difference changes how the SUV drives, refuels, and tows.

This guide breaks down what actually separates the four, so you can match the right GLC to how you drive.

Comparing the 2026 GLC Powertrains at a Glance

The table lays out the raw numbers. What they mean for a Quebec driveway is a different question, covered below.

Daily Fuel Economy: Mild Hybrid, PHEV, and AMG Compared

The GLC300 4MATIC is the most efficient of the four. Its 48-volt Integrated Starter-Generator adds up to 23 hp and 148 lb-ft on demand, allows fuel-free coasting, and recovers energy under braking, which helps it land at 9.9 L/100 km city and 7.7 L/100 km highway.

The GLC350e 4MATIC, running on its gasoline engine alone once the battery is depleted, posts 10.1 L/100 km city and 8.6 L/100 km highway, close to the GLC300 despite carrying a plug-in battery and electric motor. Combined fuel-and-electric consumption drops to 9.5 L/100 km when the battery stays topped up.

The GLC43 4MATIC+ trades efficiency for output. Its 12.1 L/100 km city and 9.0 L/100 km highway ratings come alongside an electric exhaust-gas turbocharger and hybrid assist that push horsepower well past the other two. The GLC63 S 4MATIC+ E Performance is tuned the same way, just further; fuel economy takes a back seat to its 671 hp on tap.

Electric Range and Charging

Only the GLC350e 4MATIC is built for meaningful electric-only commuting. Its 87 km of electric range covers most daily Quebec drives without touching the gas tank, and a 9.6 kW onboard charger or 60 kW DC fast charging keep turnaround times short.

The GLC63 S 4MATIC+ E Performance also plugs in, but its 150 kW rear electric motor exists to add thrust, not range. Its onboard charger tops out at 3.7 kW through a J1772 connector, with a full charge taking about 1.25 hours; the battery here is a performance component first.

The GLC300 4MATIC and GLC43 4MATIC+ have no plug. Both recover energy under braking through their mild hybrid systems, but neither drives on electricity alone.

Performance and Handling

The GLC43 4MATIC+ delivers 416 hp and 369 lb-ft, reaching 100 km/h in 4.8 seconds through an AMG SPEEDSHIFT MCT 9-speed transmission. Active rear-wheel steering and AMG RIDE CONTROL suspension sharpen turn-in, and computer-controlled engine mounts filled with magnetorheological fluid stiffen under hard cornering while staying comfortable in normal driving. It rides on 265/45R20 tires built for warm-weather grip.

The GLC63 S 4MATIC+ E Performance goes further: 671 hp and 752 lb-ft combined, 0-100 km/h in 3.5 seconds, and AMG Performance 4MATIC+ all-wheel drive routing power through its own 9-speed AMG SPEEDSHIFT MCT transmission. At 2,310 kg it is the heaviest GLC in the lineup, and it comes standard on all-season tires rather than the GLC43’s summer performance rubber, a factory difference worth knowing before comparing the two back to back.

The GLC300 4MATIC reaches 100 km/h in 6.2 seconds. It is not built to chase either AMG model, but its mild hybrid assist smooths throttle response around town.

Towing and Cargo Capacity

Towing capacity does not track horsepower in this lineup. The GLC350e 4MATIC tows up to 4,409 lbs (2,000 kg), the highest figure of the four, ahead of even the 671-hp GLC63 S 4MATIC+ E Performance at 3,968 lbs (1,800 kg). The GLC300 4MATIC and GLC43 4MATIC+ both tow up to 3,501 lbs (1,588 kg).

Cargo space runs the opposite way. The non-plug-in GLC300 4MATIC and GLC43 4MATIC+ each offer 620 L behind the rear seats and 1,680 L with them folded. The plug-in GLC350e 4MATIC and GLC63 S 4MATIC+ E Performance give up some of that space to battery packaging, at 470 L and 1,530 L respectively.

Which One Is Right for You?

• Daily commuter who wants the lowest running costs and small-trailer capability: the GLC300 4MATIC’s 9.9 L/100 km city rating and 3,501 lb (1,588 kg) tow rating cover most routines without a plug to manage.
• Home charger with a short commute: the GLC350e 4MATIC’s 87 km electric range can handle typical Quebec commuting on electricity, with the highest tow rating in the lineup in reserve.
• Driver who wants AMG handling without a plug: the GLC43 4MATIC+’s 416 hp, active rear-wheel steering, and AMG RIDE CONTROL suspension prioritize response over fuel economy.
• Driver who wants the most power the GLC offers: the GLC63 S 4MATIC+ E Performance’s 671 hp and 3.5-second 0-100 km/h time top the range, with all-season tires as standard equipment.

Each of these is a genuine trade-off, not a hierarchy. The GLC350e’s fuel-free commuting comes with less cargo room than the GLC300; the GLC43’s handling comes with a city fuel economy rating about 2.2 L/100 km higher than the GLC300’s.

Finding Your Fit at Mercedes-Benz Blainville

Four powertrains give the 2026 GLC a wide range of personalities, from the efficient GLC300 4MATIC to the electrified performance of the GLC63 S 4MATIC+ E Performance. Matching the right one to your driving comes down to how you weigh electric range, towing, and power.

Visit Mercedes-Benz Blainville in Mirabel to drive the GLC300 4MATIC, GLC350e 4MATIC, GLC43 4MATIC+, and GLC63 S 4MATIC+ E Performance back to back. Book a test drive that covers both city and highway stretches to feel what each powertrain does differently.