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When descending a steep, off-road slope, the GLB’s standard Downhill Speed Regulation allows you to creep down safely. The Model X doesn’t offer Downhill Speed Regulation.
The GLB offers an optional Surround View System to allow the driver to see objects all around the vehicle on a screen. The Model X 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 GLB’s 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 Model X doesn’t offer a driver alert monitor.
The GLB has standard Mercedes-Benz Emergency Call, which uses a global positioning satellite (GPS) receiver and a cellular system to remotely unlock your doors if you lock your keys in, help track down your vehicle if it’s stolen or send emergency personnel to the scene if any airbags deploy. The Model X doesn’t offer a GPS response system, only a navigation computer with no live response for emergencies, so if you’re involved in an accident and you’re incapacitated help may not come as quickly.
Both the GLB and the Model X have standard driver and passenger frontal airbags, front and rear 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, available all wheel drive, lane departure warning systems and blind spot warning systems.
The GLB’s corrosion warranty is 1 year and unlimited miles longer than the Model X’s (5/unlimited vs. 4/50,000).
There are almost 3 times as many Mercedes dealers as there are Tesla dealers, which makes it much easier should you ever need service under the GLB’s warranty.
From surveys of all its subscribers, Consumer Reports’ December 2019 Auto Issue reports that Mercedes vehicles are more reliable than Tesla vehicles. Consumer Reports ranks Mercedes 2 places higher in reliability than Tesla.
The GLB 250’s maximum EPA estimated driving range on a full tank of fuel is 492.9 miles, after which it can be refueled at any gas station in minutes. The Model X’s range is only 328 miles, after which the minimum recharge time is 30 minutes for only a 54% charge at a specially configured quick charge station not available in most areas. A full recharge at a conventional charging station can take up to 82 hours and 53 minutes.
In an emergency stopping situation, many drivers don’t press the brakes with enough force to stop the vehicle in the shortest distance. The GLB has a standard brake assist system to detect emergency braking situations (by how hard and how quickly the brake pedal is pressed) and then automatically apply maximum braking immediately in order to help prevent a collision. The Model X doesn’t offer a brake assist feature.
The GLB stops much shorter than the Model X:
70 to 0 MPH
Car and Driver
Changing a flat tire near traffic can be dangerous and inconvenient. The run-flat tires available on the GLB can be driven up to 50 miles without any air pressure, allowing you to drive to a service station for a repair. The Model X doesn’t offer run-flat tires.
The GLB 250 4MATIC handles at .89 G’s, while the Model X pulls only .86 G’s of cornering force in a Car and Driver skidpad test.
For better maneuverability, the GLB’s turning circle is 2.4 feet tighter than the Model X’s (38.4 feet vs. 40.8 feet).
The Mercedes GLB may be more efficient, handle and accelerate better because it weighs about 1650 to 1800 pounds less than the Tesla Model X.
The GLB is 1 foot, 3.9 inches shorter than the Model X, making the GLB easier to handle, maneuver and park in tight spaces.
The GLB is 6.5 inches narrower than the Model X, making the GLB easier to handle and maneuver in traffic.
The GLB’s standard rear seats fold to accommodate long and bulky cargo. The Model X 6-Passenger doesn’t offer folding rear seats.
To make loading groceries and cargo easier when your hands are full, the GLB’s available liftgate can be opened and closed just by kicking your foot under the back bumper, leaving your hands completely free. The Model X doesn’t offer a hands-free gesture to open its liftgate, forcing you to put cargo down if your hands are full.
An ASSYST PLUS is standard on the GLB to save the owner time and money by calculating maintenance intervals based on odometer mileage. This takes the guesswork out of keeping your vehicle in top condition and helps it last longer. Tesla doesn’t offer a maintenance reminder on the Model X.
Unlike the driver-only memory system in the Model X, the GLB has standard driver and passenger memory, so that when drivers switch, the memory setting adjusts the driver’s seat and outside mirror angle and the front passenger seat also adjusts to the new passenger’s preset preferences.
The GLB 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 Model X doesn’t offer a heads-up display.
If the windows are left open on the GLB the driver can close them all at the outside door handle or from a distance using the remote. On a hot day the driver can lower the windows from a distance using the keyless remote. The driver of the Model X can only operate the windows from inside the vehicle, with the ignition on.
The GLB’s power window, power lock, power mirror and cruise control switches are lit from behind, making them plainly visible and easier to operate at night. The Model X’s cruise control switches are unlit, making them difficult to find at night and operate safely.
To improve rear visibility by keeping the rear window clear, the GLB has a standard rear wiper. The Model X doesn’t offer a rear wiper.
The GLB’s standard side window demisters help clear frost or condensation from the side windows in the winter. The Model X doesn’t even offer side window demisters, so the driver may have to wipe the windows from the outside to gain side vision.
Optional air-conditioned seats in the GLB keep the driver and front passenger comfortable and take the sting out of hot seats in Summer. The Model X doesn’t offer air-conditioned seats.
The GLB has a standard center folding armrest for the middle row passengers. A center armrest helps make middle row passengers more comfortable and it can provide a boundary between children. The Model X doesn’t offer a middle row seat center armrest.
The GLB offers optional massaging front seats in order to maximize comfort and eliminate fatigue on long trips. Massaging seats aren’t available in the Model X.
The GLB has a 115-volt a/c outlet on the center console, allowing you to recharge a laptop or run small household appliances without special adapters that can break or get misplaced. The Model X doesn’t offer a house-current electrical outlet.
The GLB is available in both front-wheel drive and four-wheel drive configurations. The Model X doesn’t offer a two-wheel drive configuration.
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