The 2026 Mercedes-Benz GLC 300 is already a refined luxury crossover, but testing it with Kumho’s new Crugen GT Pro tires revealed a noticeable improvement in one area that can make a major difference in everyday driving: road noise.
The tires are designed for modern crossovers, SUVs and electrified vehicles, and their performance on wet surfaces, a high-speed oval and an autocross course showed that they can complement the GLC 300 without changing its character.
What Makes the Mercedes-Benz GLC 300 a Strong Daily Driver
The GLC 300 sits between the GLA and GLE in Mercedes-Benz’s crossover lineup. A GLC Coupe is also available for buyers willing to sacrifice cargo space for a different look.
The 2026 GLC 300 uses a turbocharged 2.0-liter four-cylinder engine paired with a 48-volt mild-hybrid system. It produces 255 horsepower and 295 pound-feet of torque and sends power through a nine-speed automatic transmission.
Rear-wheel drive is available, although most buyers will likely choose the 4MATIC all-wheel-drive system. Fuel economy is rated at roughly 26 mpg combined, while properly equipped models can tow up to 3,500 pounds.
The tested vehicle was well equipped and would likely cost around $53,000. While that is not inexpensive, the GLC 300 remains positioned as a Mercedes-Benz luxury crossover.
Comfort Takes Priority in the GLC 300
The GLC 300 is particularly well suited to everyday driving. After driving three different GLC 300 models, none had disappointed. The crossover feels quiet, comfortable and easy to maneuver.
Its ride is supple without becoming floaty, while its compact proportions make it relatively easy to park and fit into a normal garage.
The main criticism is the steering. There is very little steering feel, providing limited information about what the front tires are doing. For everyday use, however, the GLC 300 works well.
Inside, Mercedes-Benz delivers excellent materials, comfortable seats and a cabin that feels considerably more expensive than many competitors. The MB-Tex upholstery is particularly impressive, offering a synthetic leather material that feels remarkably close to the real thing while remaining durable and easy to live with.
The cabin also features Mercedes-Benz’s 11.9-inch portrait-oriented MBUX touchscreen and a 12.3-inch digital instrument display, creating a modern interior without making the cabin feel overly digital.
Introducing the Kumho Crugen GT Pro
The Kumho Crugen GT Pro is an all-season grand-touring tire developed for crossovers, SUVs and EVs. It replaces the Crugen HP71 and will eventually be offered in 85 sizes covering 16- to 22-inch wheels.
Kumho uses several technologies intended to improve traction, longevity and noise. The tire features 3D sipes to help maintain tread-block stability, along with a flatter profile and wider ribs designed to promote even contact and wear.
Deeper, narrower lateral grooves are designed to move water away from the tread. The tire also uses K-Noise Defender, a system designed to reduce resonance noise created as air moves through the tire grooves.
Wet-Weather and High-Speed Testing
The GLC 300 equipped with the Crugen GT Pro tires was driven on wet surfaces, a high-speed oval and an autocross course. None of the environments revealed any unpleasant surprises.
The GLC 300 is not a high-performance vehicle, and its traction control system limits aggressive driving. Still, the tires felt predictable in wet conditions, remained composed at higher speeds and provided consistent grip during more aggressive autocross driving.
The Biggest Difference Was Noise
The most noticeable improvement came from the tires’ noise levels. The Crugen GT Pro proved remarkably quiet.
Tires designed for long tread life can sometimes involve a tradeoff, as harder compounds may last longer while becoming noisier and losing some road feel. The Crugen GT Pro did not appear to suffer from that problem during the test.
Combined with the GLC 300’s already quiet cabin, the Kumho tires created an exceptionally refined driving experience. Instead of focusing on the tires throughout the day, the focus remained on driving the vehicle.
How the GLC 300 Compares With Its Rivals
The Mercedes-Benz GLC 300 competes with the BMW X3, Porsche Macan, Genesis GV70 and Audi Q5.
The Porsche Macan is the obvious choice when performance is the priority, while the Genesis GV70 offers an appealing option for buyers focused on getting more vehicle for their money.
The Mercedes-Benz GLC 300 remains near the top of its class when the entire package is considered. It combines comfort, quietness, sophistication, reasonable efficiency and an enjoyable driving experience.
Final Thoughts on the GLC 300 and Crugen GT Pro
The 2026 Mercedes-Benz GLC 300 is already a comfortable, refined and easy-to-live-with luxury crossover. Its steering provides little feedback about the front tires, but that does not change its effectiveness as an everyday vehicle.
The Kumho Crugen GT Pro tires proved to be a strong match. They performed well in wet conditions, remained composed during high-speed driving and handled an autocross course without drama.
Most importantly, they were exceptionally quiet. Rather than transforming the GLC 300 into something different, the Crugen GT Pro tires complemented the crossover’s existing strengths.
For everyday driving, that may be the most meaningful result: a tire that performs without demanding attention. With the Mercedes-Benz GLC 300, the combination delivers a comfortable, capable and very quiet daily-driving experience.
