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For enhanced safety, the front and middle seat shoulder belts of the Mercedes GLS have pretensioners to tighten the seatbelts and eliminate dangerous slack in the event of a collision and force limiters to limit the pressure the belts will exert on the passengers. The Dodge Durango SRT doesn’t offer pretensioners for the middle seat belts.
The GLS’ pre-crash front seatbelts will tighten automatically in the event the vehicle detects an impending crash, improving protection against injury significantly. The Durango SRT doesn’t offer pre-crash pretensioners.
When descending a steep, off-road slope, the GLS’ standard Downhill Speed Regulation allows you to creep down safely. The Durango SRT doesn’t offer Downhill Speed Regulation.
The GLS has a standard Surround View System to allow the driver to see objects all around the vehicle on a screen. The Durango SRT only offers a rear monitor and front and rear parking sensors that beep or flash a light. That doesn’t help with obstacles to the sides.
The GLS’ driver alert monitor detects an inattentive driver then sounds a warning and suggests a break. According to the NHTSA, drivers who fall asleep cause about 100,000 crashes and 1500 deaths a year. The Durango SRT doesn’t offer a driver alert monitor.
Both the GLS and the Durango SRT have standard driver and passenger frontal airbags, front side-impact airbags, driver knee airbags, side-impact head airbags, height adjustable front shoulder belts, four-wheel antilock brakes, all wheel drive, traction control, electronic stability systems to prevent skidding, daytime running lights, rearview cameras and available lane departure warning systems.
The GLS comes with a full 4-year/50,000-mile basic warranty, which covers the entire truck and includes 24-hour roadside assistance. The Durango SRT’s 3-year/36,000-mile basic warranty expires 1 year and 14,000 miles sooner.
The GLS’ 5 year corrosion warranty has no mileage limitations, but the corrosion warranty on the Durango SRT runs out after 60,000 miles.
For smoother operation, better efficiency and fewer moving parts, the engines in the GLS have an overhead cam design, rather than the old pushrod design of the engine in the Durango SRT.
J.D. Power and Associates’ 2019 survey of the owners of three-year-old vehicles provides the long-term dependability statistics that show that Mercedes vehicles are more reliable than Dodge vehicles. J.D. Power ranks Mercedes 13th in reliability, above the industry average. With 44 more problems per 100 vehicles, Dodge is ranked 28th.
From surveys of all its subscribers, Consumer Reports’ December 2018 Auto Issue reports that Mercedes vehicles are more reliable than Dodge vehicles. Consumer Reports ranks Mercedes 4 places higher in reliability than Dodge.
The GLS 580’s standard 4.0 turbo V8 hybrid produces 8 more horsepower (483 vs. 475) and 46 lbs.-ft. more torque (516 vs. 470) than the Durango SRT’s 6.4 V8.
On the EPA test cycle the GLS 450 gets better fuel mileage than the Durango SRT (19 city/23 hwy vs. 13 city/19 hwy).
Regenerative brakes improve the GLS’ fuel efficiency by converting inertia back into energy instead of wasting it. The Durango SRT doesn’t offer a regenerative braking system.
In heavy traffic or at stoplights the GLS’ engine automatically turns off when the vehicle is stopped, saving fuel and reducing pollution. The engine is automatically restarted when the driver gets ready to move again. (Start/Stop isn’t accounted in present EPA fuel mileage tests.) The Durango SRT doesn’t offer an automatic engine start/stop system.
A nine-speed automatic is standard on the Mercedes GLS, for better acceleration and lower engine speed on the highway. Only an eight-speed automatic is available for the Durango SRT.
For better ride, handling and brake cooling the GLS offers optional 23-inch wheels. The Durango SRT’s largest wheels are only 20-inches.
The front and rear suspension of the GLS uses air springs for a smoother, controlled ride than the Durango SRT, which uses coil springs. Air springs maintain proper ride height and ride more smoothly.
The GLS offers an available adjustable active suspension system, which counteracts cornering forces actively, limiting body roll and improving handling and stability. Dodge doesn’t offer an active suspension on the Durango SRT.
The GLS’ drift compensation steering can automatically compensate for road conditions which would cause the vehicle to drift from side to side, helping the driver to keep the vehicle straight more easily. The Durango SRT doesn’t offer drift compensation steering.
For a smoother ride and more stable handling, the GLS’ wheelbase is 3.6 inches longer than on the Durango SRT (123.4 inches vs. 119.8 inches).
For better handling and stability, the track (width between the wheels) on the GLS is 1.8 inches wider in the front and 2.5 inches wider in the rear than on the Durango SRT.
For better maneuverability, the GLS’ turning circle is 1.6 feet tighter than the Durango SRT’s (39.4 feet vs. 41 feet).
The design of the Mercedes GLS amounts to more than styling. The GLS has an aerodynamic coefficient of drag of .32 Cd. That is lower than the Durango SRT (.35) and many sports cars. A more efficient exterior helps keep the interior quieter and helps the GLS get better fuel mileage.
The GLS has .8 inches more front shoulder room, .4 inches more rear headroom, 3.3 inches more rear legroom, .8 inches more rear shoulder room and 1.1 inches more third row legroom than the Durango SRT.
For enhanced passenger comfort on long trips the GLS’ middle and third row seats recline. The Durango SRT’s third row seats don’t recline.
The GLS’ cargo area provides more volume than the Durango SRT.
Behind Third Seat
17.4 cubic feet
17.2 cubic feet
The GLS has a standard third row seat which folds flat into the floor. This completely clears a very large cargo area quickly. The Durango SRT doesn’t offer seats that fold into the floor.
Pressing a switch automatically lowers or raises the GLS’ second and third row seats, to make changing between cargo and passengers easier. The Durango SRT doesn’t offer automatic folding seats.
To make loading groceries and cargo easier when your hands are full, the GLS’ cargo door can be opened and closed just by kicking your foot under the back bumper, leaving your hands completely free. The Durango SRT doesn’t offer a hands-free gesture to open its liftgate, forcing you to put cargo down if your hands are full.
J.D. Power and Associates surveys of service recipients show that Mercedes service is better than Dodge. J.D. Power ranks Mercedes fifth in service department satisfaction. With a 66% lower rating, Dodge is ranked 27th.
Unlike the driver-only memory system in the Durango SRT, the GLS has standard driver and passenger memory, so that when drivers switch, the memory setting adjusts the driver’s seat, steering wheel position, suspension setting, power steering assist, outside mirror angle, climate settings and radio stations and the front passenger seat also adjusts to the new passenger’s preset preferences.
The GLS offers an optional heads-up display that projects speed and navigation instruction readouts in front of the driver’s line of sight, allowing drivers to view information without diverting their eyes from the road. The Durango SRT doesn’t offer a heads-up display.
The GLS’ power parking brake sets with one touch and releases with one touch or automatically. The Durango SRT’s parking brake has to released manually.
The GLS’ front and rear power windows all open or close fully with one touch of the switches, making it more convenient at drive-up windows and toll booths, or when talking with someone outside the car. The Durango SRT’s rear power window switches have to be held the entire time to open or close them fully.
To help drivers avoid possible obstacles, the GLS has standard cornering lights to illuminate around corners when the turn signals are activated. The Durango SRT doesn’t offer cornering lights. The GLS also has standard adaptive headlights to illuminate around corners automatically by reading vehicle speed and steering wheel angle.
Manual rear side window sunshades are available in the GLS to help block heat and glare for the rear passengers. The Durango SRT doesn’t offer rear side window sunshades.
The GLS has standard heated front and optional heated second and third row seats, which keep the driver and passengers extremely comfortable in the winter. Dodge doesn’t offer heated seats in the third row of the Durango SRT.
Optional air conditioned the front and second row seats keep the GLS’ passengers comfortable and take the sting out of hot leather in summer. The Durango SRT doesn’t offer air-conditioned seats for the second row.
The GLS offers optional massaging front and second row seats, which keep the driver and middle row passengers. Massaging seats aren’t available in the Durango SRT.
To quickly and conveniently keep personal devices charged without cables tangling and wearing out, the Mercedes GLS has a standard wireless phone charging system (Qi) in the center console and for the rear passengers. The Durango SRT doesn’t offer wireless personal charging.
The GLS’ Active Parking Assist can parallel park or back into a parking spot by itself, starting, stopping and changing direction automatically. The Durango SRT doesn’t offer an automated parking system.
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