The GLE’s pre-crash front seatbelts will tighten automatically in the event the vehicle detects an impending crash, improving protection against injury significantly. The RX Series doesn’t offer pre-crash pretensioners.
Both the GLE and the RX Series have standard driver and passenger frontal airbags, front side-impact airbags, driver knee airbags, side-impact head airbags, front and rear seatbelt pretensioners, 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, driver alert monitors, available lane departure warning systems and around view monitors.
For its top level performance in IIHS driver and passenger-side small overlap frontal, moderate overlap frontal, side impact, roof strength and head restraint tests, its standard vehicle-to-vehicle front crash prevention system, with its optional vehicle-to-pedestrian front crash prevention system, and its standard headlight’s “Good” rating, the Insurance Institute for Highway Safety grants the GLE its highest rating: “Top Pick Plus” for 2020, a rating granted to only 32 vehicles tested by the IIHS. The RX Series is only a standard “Top Pick” for 2020.
There are over 58 percent more Mercedes dealers than there are Lexus dealers, which makes it much easier should you ever need service under the GLE’s warranty.
The GLE has more powerful engines than the RX Series:
|
Horsepower |
Torque |
GLE 350 2.0 turbo 4-cylinder |
255 HP |
273 lbs.-ft. |
GLE 450 3.0 turbo 6-cylinder hybrid |
362 HP |
369 lbs.-ft. |
GLE 580 4.0 turbo V8 hybrid |
483 HP |
516 lbs.-ft. |
RX 350 3.5 DOHC V6 |
295 HP |
268 lbs.-ft. |
RX 450h 3.5 DOHC V6 hybrid |
308 HP |
n/a |
As tested in Motor Trend the GLE 450 is faster than the RX 450h:
|
GLE |
RX Series |
Zero to 60 MPH |
5.6 sec |
7 sec |
Quarter Mile |
14.2 sec |
15.3 sec |
Speed in 1/4 Mile |
97.4 MPH |
94.3 MPH |
Regardless of its engine, the GLE’s engine automatically turns off when the vehicle is stopped, saving fuel and reducing pollution. (Start/Stop isn’t accounted in present EPA fuel mileage tests.) Lexus only offers an automatic engine start/stop system on the RX Series Hybrid.
The GLE has 5.3 gallons more fuel capacity than the RX Series Hybrid’s standard fuel tank (22.5 vs. 17.2 gallons), for longer range between fill-ups. The GLE has 3.3 gallons more fuel capacity than the RX Series’ standard fuel tank (22.5 vs. 19.2 gallons).
For better stopping power the GLE 450’s front brake rotors are larger than those on the RX Series:
|
GLE 350 |
GLE 450 |
RX Series |
Front Rotors |
13 inches |
14.8 inches |
12.9 inches |
Rear Rotors |
13 inches |
13.6 inches |
13.3 inches |
The GLE stops shorter than the RX Series:
|
GLE |
RX Series |
|
60 to 0 MPH |
115 feet |
123 feet |
Motor Trend |
For better traction, the GLE has larger standard tires than the RX Series (255/50R19 vs. 235/65R18). The GLE’s optional tires are larger than the largest tires available on the RX Series (F:275/45R21 & R:315/40R21 vs. 235/65R18).
The GLE’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 RX Series’ standard 65 series tires. The GLE’s optional 275/45R21 front and 315/40R21 rear tires have a lower 45 series front and 40 series rear profile than the RX Series’ optional 55 series tires.
For better ride, handling and brake cooling the GLE has standard 19-inch wheels. Smaller 18-inch wheels are standard on the RX Series. The GLE 580’s optional 22-inch wheels are larger than the 20-inch wheels optional on the RX Series.
The GLE 450 offers an available adjustable active suspension system, which counteracts cornering forces actively, limiting body roll and improving handling and stability. Lexus doesn’t offer an active suspension on the RX Series.
The GLE has a standard automatic front and rear load leveling suspension to keep ride height level with a heavy load or when towing. The GLE’s height leveling suspension allows the driver to raise ride height for better off-road clearance and then lower it again for easier entering and exiting and better on-road handling. The RX Series doesn’t offer a load leveling suspension.
The GLE’s 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 RX Series doesn’t offer drift compensation steering.
For a smoother ride and more stable handling, the GLE’s wheelbase is 8.1 inches longer than on the RX Series (117.9 inches vs. 109.8 inches).
For better handling and stability, the track (width between the wheels) on the GLE is 1.7 inches wider in the front and 2.8 inches wider in the rear than on the RX Series.
The GLE’s front to rear weight distribution is more even (53.5% to 46.5%) than the RX Series’ (57% to 43%). This gives the GLE more stable handling and braking.
The GLE 450 handles at .83 G’s, while the RX 450h pulls only .78 G’s of cornering force in a Motor Trend skidpad test.
The GLE 450 executes Motor Trend’s “Figure Eight” maneuver quicker than the RX 450h (27 seconds @ .69 average G’s vs. 27.5 seconds @ .65 average G’s).
For greater off-road capability the GLE Airmatic has a greater minimum ground clearance than the RX Series (9.2 vs. 8.2 inches), allowing the GLE to travel over rougher terrain without being stopped or damaged.
The design of the Mercedes GLE amounts to more than styling. The GLE has an aerodynamic coefficient of drag of .29 Cd. That is significantly lower than the RX Series (.33) and many sports cars. A more efficient exterior helps keep the interior quieter and helps the GLE get better fuel mileage.
The GLE offers optional seating for 7 passengers; the RX Series can only carry 5.
The GLE has 1.1 inches more front headroom, 1.5 inches more front shoulder room, .5 inches more rear headroom, 2.9 inches more rear legroom and .7 inches more rear shoulder room than the RX Series.
The GLE has a much larger cargo volume with its rear seat up than the RX Series with its rear seat up (33 vs. 18.4 cubic feet). The GLE has a much larger cargo volume with its rear seat folded than the RX Series with its rear seat folded (75 vs. 56.3 cubic feet).
Unlike the driver-only memory system optional at extra cost in the RX Series, the GLE offers an optional passenger memory, so that when drivers switch, the memory setting adjusts the driver’s seat, steering wheel position and outside mirror angle and the front passenger seat also adjusts to the new passenger’s preset preferences.
The GLE’s instruments include an oil pressure gauge and a temperature gauge - which could save your engine! Often ‘idiot lights’ don’t warn you until damage has been done. The RX Series does not have an oil pressure gauge.
The Insurance Institute for Highway Safety (IIHS) conducts detailed tests on headlights for their range both straight ahead and in curves and to be certain they don’t exceed acceptable amounts of glare to oncoming drivers. The GLE’s headlights were rated “Good” to “Acceptable” by the IIHS, while the RX Series’ headlights are rated “Acceptable” to “Marginal.”
The GLE offers optional massaging front seats in order to maximize comfort and eliminate fatigue on long trips. Massaging seats aren’t available in the RX Series.
To quickly and conveniently keep personal devices charged without cables tangling and wearing out, the Mercedes GLE offers an optional wireless phone charging system (Qi) in the center console. The RX Series doesn’t offer wireless personal charging.
The GLE’s Active Parking Assist can parallel park or back into a parking spot by itself, starting, stopping and changing direction automatically. The RX Series doesn’t offer an automated parking system.
According to The Car Book by Jack Gillis, the GLE is less expensive to operate than the RX Series because typical repairs cost much less on the GLE than the RX Series, including $276 less for a water pump, $57 less for a starter, $1665 less for a timing belt/chain and $937 less for a power steering pump.
© 1991-2016 Advanta-STAR Automotive Research. All rights reserved.
Who We Are
Click here
to view the disclaimers, limitations and notices about EPA fuel mileage, crash tests, coprights, trademarks, and other issues.