Mercedes GL350 Review: 7-Seater Diesel Luxury SUV

The Mercedes GL350 stands out as a full-size luxury SUV that masterfully combines opulent comfort, formidable power, and practical versatility. Designed primarily for discerning buyers seeking a seven-seater with premium refinement, it delivers a driving experience that feels effortless despite its massive dimensions. Powered by a robust 3.0-liter V6 diesel engine, the GL350 offers strong performance with respectable fuel efficiency, making it a smart choice in its class.

Powertrain and Performance Excellence

At the heart of the Mercedes GL350 lies a 3.0-liter turbodiesel V6 engine producing 255 horsepower and 620 Nm of torque. This setup propels the hefty SUV from 0-62 mph in just 7.9 seconds, a figure that belies its 2,500+ kg curb weight. The engine’s smooth power delivery shines in mid-range acceleration, ensuring responsive overtaking on highways without excessive noise intrusion into the cabin.

Paired with a seven-speed 7G-Tronic automatic transmission, gear shifts are seamless, with paddle shifters providing manual control when desired. The 4MATIC all-wheel-drive system distributes power intelligently, enhancing traction across varied surfaces. Real-world testing reveals combined fuel economy around 25-35 mpg, significantly better than petrol counterparts, thanks to efficient diesel tuning and stop-start technology.

This table highlights the GL350’s edge in efficiency and torque over typical rivals like the Audi Q7 or Land Rover Discovery.

Superior Ride Quality and Handling Dynamics

The GL350’s Airmatic air suspension is a standout feature, offering adjustable damping in Comfort or Sport modes. In Comfort, it absorbs road imperfections with poise, creating a wafting sensation ideal for long journeys. Sport mode firms up the setup, reducing body roll and sharpening steering response without sacrificing everyday usability.

Despite its enormous footprint—over 5 meters long—the GL350 handles surprisingly nimbly. Electric power steering is light yet precise, with good feedback. Optional Active Curve System employs adaptive anti-roll bars for flatter cornering. On motorways, stability is unwavering, while twisty roads reveal agile poise uncommon in vehicles of this size.

• Exceptional isolation from wind and tire noise
• Stable high-speed cruising
• Confident grip in wet conditions via 4MATIC
• Off-road prowess with hill descent control and adjustable ride height

Interior Luxury and Space Optimization

Step inside the GL350, and you’re greeted by a cavernous cabin finished in high-grade leather and soft-touch materials. The dashboard layout prioritizes ergonomics, with intuitive controls and a commanding driving position. Visibility is excellent, aided by large glass areas and optional 360-degree cameras.

Seating for seven is genuinely usable, with the third row offering adult-friendly legroom surpassing many competitors. Middle-row captain’s chairs fold at the touch of a button for easy third-row access. Cargo versatility is impressive: 295 liters with all seats up, expanding to 680 liters with the third row folded, and a massive 2,300 liters with rear seats stowed.

Premium touches abound, including heated/ventilated front seats with memory, Harman Kardon audio, and tri-zone climate control. Infotainment, while dated by modern standards, remains functional with clear menus and Bluetooth integration.

Advanced Safety and Driver Assistance Features

Safety is paramount in the GL350, equipped with Attention Assist, Collision Prevention Assist, and Blind Spot Assist as standard. Active Bi-Xenon headlights, adaptive cruise control, and a comprehensive stability suite provide peace of mind. Parking is simplified by rearview cameras and parking sensors that can be deactivated if needed.

Off-road credentials include low-range gearing, downhill speed regulation, and air suspension that raises the body for greater ground clearance. This duality—supreme on-road refinement paired with capable trail performance—sets it apart.

Design Aesthetics and Practicality

Externally, the GL350 adopts a bold, boxy silhouette with angular lines and prominent Mercedes styling cues. Chrome accents and 20-inch alloys enhance its road presence. While polarizing to some, the design maximizes interior volume and aerodynamics for efficiency.

Practicality shines through power-folding seats, a hands-free tailgate, and ample storage cubbies. Families appreciate the easy-entry second row and child-friendly anchors throughout.

Ownership Considerations: Costs and Reliability

Upfront pricing positions the GL350 as a premium option, though depreciation can make used models attractive. Maintenance follows Mercedes’ schedule, with diesel longevity praised in long-term tests. Fuel costs remain reasonable given efficiency, but tires and brakes reflect its mass.

Common praises include unmatched comfort for cross-country drives; drawbacks are its bulk in urban settings and thirstier petrol alternatives.

Mercedes GL350 vs Key Rivals

The GL350 excels in value for diesel efficiency and space.

Frequently Asked Questions (FAQs)

Is the Mercedes GL350 suitable for off-roading?

Yes, with 4MATIC, air suspension, and terrain modes, it handles light to moderate off-road duties effectively.

How reliable is the GL350 diesel engine?

Highly reliable with proper maintenance; the 3.0L V6 is known for durability exceeding 200,000 miles.

What’s the boot space like?

Up to 2,300 liters with seats folded, making it one of the roomiest in class.

Does it have Apple CarPlay?

Later models do via retrofit; base systems focus on COMAND navigation.

Is it good for towing?

Absolutely, rated up to 3,500 kg braked, ideal for trailers or caravans.

Final Verdict on the Mercedes GL350

The Mercedes GL350 remains a compelling choice for those prioritizing luxury, space, and diesel efficiency in a full-size SUV. Its blend of refinement, technology, and capability endures, even years after production. Ideal for families or executives needing a do-it-all vehicle.