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The XC40’s pre-crash front seatbelts will tighten automatically in the event the vehicle detects an impending crash, improving protection against injury significantly. The GLB doesn’t offer pre-crash pretensioners.
Both the XC40 and GLB have child safety locks to prevent children from opening the rear doors. The XC40 has power child safety locks, allowing the driver to activate and deactivate them from the driver's seat and to know when they're engaged. The GLB’s child locks have to be individually engaged at each rear door with a manual switch. The driver can’t know the status of the locks without opening the doors and checking them.
The XC40 has a standard Whiplash Protection System (WHIPS), which use a specially designed seat to protect the driver and front passenger from whiplash. During a rear-end collision, the WHIPS allows the backrest to travel backwards to cushion the occupants and the headrests move forward to prevent neck and spine injuries. At the same time the pretensioning seatbelts fire, removing slack from the belts. The GLB doesn’t offer a whiplash protection system.
The XC40 has standard Automatic Braking After Collision, which automatically apply the brakes in the event of a crash to help prevent secondary collisions and prevent further injuries. The GLB doesn’t offer a post collision braking system: in the event of a collision that triggers the airbags, more collisions are possible without the protection of airbags that may have already deployed.
Over 200 people are killed each year when backed over by motor vehicles. The XC40 offers an optional CTA Auto Brake that use rear sensors to monitor and automatically apply the brakes to prevent a rear collision. The GLB doesn’t offer backup collision prevention brakes.
To help make backing safer, the XC40’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 GLB doesn’t offer a cross-path warning system.
Both the XC40 and the GLB have standard driver and passenger frontal airbags, front side-impact airbags, driver knee airbags, side-impact head airbags, front and rear seatbelt pretensioners, front wheel drive, 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 and available 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, its standard vehicle-to-pedestrian front crash prevention system, and its available headlight’s “Good” rating, the Insurance Institute for Highway Safety grants the XC40 the rating of “Top Pick” for 2020, a rating granted to only 32 vehicles tested by the IIHS. The GLB has not been tested, yet.
The XC40’s corrosion warranty is 7 years longer than the GLB’s (12 vs. 5 years).
Volvo pays for scheduled maintenance on the XC40 for 3 years and 36,000 miles. Volvo will pay for oil changes, lubrication and any other required maintenance. Mercedes doesn’t pay scheduled maintenance for the GLB.
A reliable vehicle saves its owner time, money and trouble. Nobody wants to be stranded or have to be without a vehicle while it’s being repaired. Consumer Reports rates the XC40’s reliability 35 points higher than the GLB.
The XC40 T5’s standard 2.0 turbo 4-cylinder produces 27 more horsepower (248 vs. 221) than the GLB’s 2.0 turbo 4-cylinder.
On the EPA test cycle the XC40 T4 FWD gets better fuel mileage than the GLB 250 FWD Auto (23 city/32 hwy vs. 23 city/30 hwy).
The XC40 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 GLB doesn’t offer a cap-less fueling system.
For better stopping power the XC40’s front brake rotors are larger than those on the GLB:
For better traction, the XC40’s optional tires are larger than the largest tires available on the GLB (245/45R20 vs. 235/55R18).
The XC40’s optional tires provide better handling because they have a lower 45 series profile (height to width ratio) that provides a stiffer sidewall than the GLB’s optional 50 series tires.
The XC40 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 GLB; 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. Some tire options on the GLB don’t have a run-flat feature, either.
For better maneuverability, the XC40’s turning circle is 1 foot tighter than the GLB’s (37.4 feet vs. 38.4 feet).
For greater off-road capability the XC40 has a greater minimum ground clearance than the GLB (8.3 vs. 7.9 inches), allowing the XC40 to travel over rougher terrain without being stopped or damaged.
The XC40 is 8.2 inches shorter than the GLB, making the XC40 easier to handle, maneuver and park in tight spaces.
The XC40 has .8 inches more front shoulder room and 1.4 inches more rear shoulder room than the GLB.
The XC40 has a much larger cargo volume than the GLB with its rear seat up (20.7 vs. 5.1 cubic feet).
Pressing a switch automatically lowers the XC40’s optional rear seats, to make changing between passengers and cargo easier. The GLB doesn’t offer automatic folding seats.
Heated windshield washer nozzles are optional on the XC40 to prevent washer fluid and nozzles from freezing and help continue to keep the windshield clear in sub-freezing temperatures. The GLB doesn’t offer heated windshield washer nozzles.
To improve rear visibility by keeping the rear window clear, the XC40 has a standard rear fixed intermittent wiper with a full on position. The rear wiper standard on the GLB only has an intermittent setting, so in a hard rain visibility isn’t as good.
Consumer Reports rated the XC40’s headlight performance “Very Good,” a higher rating than the GLB’s headlights, which were rated “Fair.”
In poor weather, headlights can lose their effectiveness as grime builds up on their lenses. This can reduce visibility without the driver realizing. The XC40 offers available headlight washers to keep headlight output high. The GLB doesn’t offer headlight washers.
Both the XC40 and the GLB offer optional heated front seats. The XC40 also offers optional heated rear seats to keep those passengers extremely comfortable in the winter. Heated second row seats aren’t available in the GLB.
Consumer Reports® recommends the Volvo XC40, based on reliability, safety and performance. The Mercedes GLB isn't recommended.
The Volvo XC40 outsold the Mercedes GLB by over 15 to one during 2019.
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