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Using vehicle speed sensors and seat sensors, smart airbags in the Passport deploy with different levels of force or don’t deploy at all to help better protect passengers of all sizes in different collisions. The Passport’s side airbags will shut off if a child is leaning against the door. The GLC Coupe’s airbags don’t have smart features and will always deploy full force.
To help make backing safer, the Passport EX-L/Touring/Elite’s cross-path warning system uses wide-angle radar in the rear bumper to alert the driver to vehicles approaching from the side, helping the driver avoid collisions. The GLC Coupe doesn’t offer a cross-path warning system.
Both the Passport and the GLC Coupe have standard driver and passenger frontal airbags, side-impact head airbags, height adjustable front shoulder belts, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, crash mitigating brakes, daytime running lights, rearview cameras, available all wheel drive, blind spot warning systems and rear parking sensors.
Honda’s powertrain warranty covers the Passport 1 year and 10,000 miles longer than Mercedes covers the GLC Coupe. Any repair needed on the engine, transmission, axles, joints or driveshafts is fully covered for 5 years or 60,000 miles. Coverage on the GLC Coupe ends after only 4 years or 50,000 miles.
There are almost 3 times as many Honda dealers as there are Mercedes dealers, which makes it much easier should you ever need service under the Passport’s warranty.
The engine in the Passport has a single overhead cam for simplicity. The engines in the GLC Coupe have dual overhead cams, which add to the number of moving parts and the complexity of the cylinder heads.
J.D. Power and Associates’ 2018 survey of the owners of three-year-old vehicles provides the long-term dependability statistics that show that Honda vehicles are more reliable than Mercedes vehicles. J.D. Power ranks Honda 12th in reliability, above the industry average. With 7 more problems per 100 vehicles, Mercedes is ranked 15th.
From surveys of all its subscribers, Consumer Reports’ December 2018 Auto Issue reports that Honda vehicles are more reliable than Mercedes vehicles. Consumer Reports ranks Honda 2 places higher in reliability than Mercedes.
The Passport’s 3.5 SOHC V6 produces 39 more horsepower (280 vs. 241) than the GLC 300 Coupe’s standard 2.0 turbo 4 cyl.
An engine control system that can shut down half of the engine’s cylinders helps improve the Passport’s fuel efficiency. The GLC Coupe doesn’t offer a system that can shut down part of the engine.
To lower fuel costs and make buying fuel easier, the Honda Passport uses regular unleaded gasoline. The GLC Coupe requires premium, which can cost 20 to 55 cents more per gallon.
The Passport has 2.1 gallons more fuel capacity than the GLC Coupe (19.5 vs. 17.4 gallons), for longer range between fill-ups.
The Passport has a standard cap-less fueling system. The fuel filler is automatically opened when the fuel nozzle is inserted and automatically closed when it’s removed. This eliminates the need to unscrew and replace the cap and it reduces fuel evaporation, which causes pollution. The GLC Coupe doesn’t offer a cap-less fueling system.
For better traction, the Passport has larger standard tires than the GLC Coupe (245/50R20 vs. 235/55R19). The Passport Touring/Elite’s tires are larger than the largest tires available on the GLC Coupe (265/45R20 vs. 255/45R20).
The Passport Sport/EX-L’s standard tires provide better handling because they have a lower 50 series profile (height to width ratio) that provides a stiffer sidewall than the GLC Coupe’s standard 55 series tires.
For better ride, handling and brake cooling the Passport has standard 20-inch wheels. Smaller 19-inch wheels are standard on the GLC Coupe.
The Passport has a standard easy tire fill system. When inflating the tires, the vehicle’s integrated tire pressure sensors keep track of the pressure as the tires fill and tell the driver when the tires are inflated to the proper pressure. The GLC Coupe doesn’t offer vehicle monitored tire inflation.
The Passport has a standard space-saver spare tire so you can replace a flat tire and drive to have the flat repaired or replaced. A spare tire isn’t available on the GLC Coupe; it requires you to depend on its run-flat tires, which limits mileage and speed before they are repaired. If a run-flat is damaged beyond repair by a road hazard your vehicle will have to be towed.
For better handling and stability, the average track (width between the wheels) on the Passport is 3 inches wider in the front and 3.1 inches wider in the rear than the track on the GLC Coupe.
To almost totally eliminate engine vibration in the passenger area, the Passport has an electronically controlled liquid-filled main engine mount. A computer-controlled electric current in the liquid changes its viscosity, allowing the mount to dampen the engine completely at all RPMs. The GLC Coupe uses conventional solid rubber engine mounts.
The Passport uses computer-generated active noise cancellation to help remove annoying noise and vibration from the passenger compartment, especially at low frequencies. The GLC Coupe doesn’t offer active noise cancellation.
The Passport has 1.2 inches more front headroom, .1 inches more front legroom, 4.7 inches more front shoulder room, 1.8 inches more rear headroom, 2.4 inches more rear legroom and 6.1 inches more rear shoulder room than the GLC Coupe.
The Passport has a much larger cargo volume with its rear seat up than the GLC Coupe with its rear seat up (41.2 vs. 17.6 cubic feet). The Passport has a much larger cargo volume with its rear seat folded than the GLC Coupe with its rear seat folded (77.9 vs. 49.4 cubic feet).
Maximum trailer towing in the Mercedes GLC Coupe is limited to 3500 pounds. The Passport offers up to a 5000 lbs. towing capacity.
The Passport has a standard remote vehicle starting system, so the vehicle can be started from inside the driver's house. This allows the driver to comfortably warm up the engine before going out to the vehicle. The climate system will also automatically heat or cool the interior. The GLC Coupe doesn’t offer a remote starting system.
To improve rear visibility by keeping the rear window clear, the Passport has a standard rear fixed intermittent wiper with a full on position. The rear wiper standard on the GLC Coupe only has an intermittent setting, so in a hard rain visibility isn’t as good.
The Passport is available in both front-wheel drive and four-wheel drive configurations. The GLC Coupe doesn’t offer a two-wheel drive configuration.
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