2026 Mercedes-Benz GLS 450 for Quebec Families Who Want Everything

The 2026 Mercedes-Benz GLS-Class lineup has three very different answers to the same question: how much SUV does your family actually need? For most Quebec families who want genuine three-row space, all-wheel confidence, and a mild-hybrid powertrain without paying for performance they will rarely use, the GLS 450 4MATIC makes the clearest argument.

This is not the entry-level consolation prize. It is the trim where the GLS does everything the vehicle was designed to do.

Why the GLS 450 4MATIC Deserves to Lead Your Shortlist

The 3.0L inline-6 turbo with mild-hybrid drive produces 375 hp and 369 lb-ft of torque, paired to a 9G-TRONIC 9-speed automatic. It reaches 100 km/h in 6.1 seconds, which is brisk for a 5,209 mm SUV carrying seven people. More practically, it tows up to 3,500 kg, matching the GLS 580 exactly and actually exceeding the AMG GLS 63’s 3,300 kg rating.

The AIRMATIC air suspension is standard, giving the GLS 450 the same four-wheel self-levelling ride quality as the pricier trims. Load up the third row, add luggage, and the suspension compensates automatically. That matters on Quebec highways as much as it does on a smooth boulevard.

One detail that stands out for year-round driving: the GLS 450 comes standard on 21-inch all-season tires. The GLS 580 and AMG GLS 63 roll on 22-inch summer performance rubber. For families who do not want the annual cost and hassle of a dedicated winter tire swap on top of their vehicle payment, that is a real-world advantage baked right into the base specification.

What the GLS 450 4MATIC Brings to Every Drive

• Powertrain: 3.0L I6 turbo mild hybrid, 375 hp, 369 lb-ft, 9G-TRONIC 9-speed automatic
• Towing: 3,500 kg, equal to the GLS 580
• Cargo: 355 L behind the third row; up to 2,400 L with all rear seats folded flat
• Seating: 7 passengers standard; optional 6-passenger captain’s chair configuration
• Climate: Four-zone climate control standard; fifth zone (third row) available as an option
• Wheels/Tyres: 21-inch alloys with all-season tyres standard
• Suspension: 4-wheel independent AIRMATIC with self-levelling, adjustable ride height
• AWD: 4MATIC fully variable all-wheel drive

The cargo area runs from 355 L with all seats up to 2,400 L with rows two and three folded flat. Both the second and third rows power-fold, and a single button in the cargo area can drop all rear seats at once. Floor-mounted tie-downs, parcel nets, a 12-volt outlet, and a suspension-lowering button for easier loading are all part of the package.

The second row offers power adjustment, recline, heating, and easy access to the third row. The third row itself fits two adults and power-folds in a 50/50 split. Leather is standard across all three rows.

Who the GLS 450 4MATIC Is Built For

The GLS 450 suits families of five to seven who use all three rows regularly and need the full GLS footprint without prioritising top-end performance numbers. If your priorities are:

• Reliable three-row seating for school runs, road trips, and extended family
• A powertrain with genuine towing capacity (3,500 kg)
• All-season capability without a separate tire package
• Standard AIRMATIC suspension for load-levelling comfort
• A technology suite that covers the whole family

…the GLS 450 delivers all of it. The twin 12.3-inch displays, MBUX voice control, wireless Apple CarPlay and Android Auto, and up to 11 USB-C ports keep every row connected. PRE-SAFE, DISTRONIC with Active Lane Change Assist, and 11 airbags cover safety across all three rows.

Families who rarely tow anything, never fill the third row, and want the absolute sharpest acceleration will find more to consider in the GLS 580 or AMG GLS 63. But that is a specific set of priorities, and it comes with V8 fuel consumption.

The Decision: GLS 450 vs. GLS 580 vs. AMG GLS 63

The GLS 580 spends 16.6 L/100 km in the city; the AMG GLS 63 uses 16.2 L/100 km city. The GLS 450’s official EnerGuide city and highway figures are not yet confirmed, but the mild-hybrid inline-6 is a meaningfully smaller engine than either V8. The fuel savings accumulate across a full year of Quebec city driving.

The GLS 580 and AMG GLS 63 also arrive on summer performance tyres, which means a winter tyre set is a practical necessity for year-round Quebec use. The GLS 450’s standard all-season fitment sidesteps that cost and logistics entirely.

On towing, the GLS 450 matches the GLS 580 at 3,500 kg and actually edges past the AMG GLS 63 at 3,300 kg. Performance bragging rights aside, the GLS 450 is the stronger tow vehicle of the three on paper.

The fifth climate zone (covering the third row individually) is standard on the GLS 580 and available as an option on the GLS 450. If your third-row passengers are vocal about their comfort, that option is worth adding. If the third row sees occasional use, the standard four-zone system handles it fine.

Find Your 2026 GLS 450 4MATIC at Mercedes-Benz Blainville

The 2026 GLS 450 4MATIC offers the complete three-row GLS experience: full cargo versatility from 355 to 2,400 L, 3,500 kg towing, standard AIRMATIC suspension, all-season tyres, and the full MBUX technology suite, all powered by a 375-hp mild-hybrid inline-6.

Visit Mercedes-Benz Blainville in Mirabel to explore the GLS 450 4MATIC in person, work through the option packages with a product specialist, and find the configuration that fits your family.