Compare the2024 Cadillac XT5VS 2023 Mercedes GLB

In the past twenty years hundreds of infants and young children have died after being left in vehicles, usually by accident. When turning the vehicle off, drivers of the XT5 are reminded to check the back seat if they opened the rear door before starting out. The GLB doesn’t offer a back seat reminder.

Over 200 people are killed each year when backed over by motor vehicles. The XT5 Premium Luxury/Sport offers optional Reverse Automatic Braking that uses rear sensors to monitor for objects to the rear and automatically applies the brakes to prevent a collision. The GLB doesn’t offer automatic braking for stationary objects directly to the rear.

A passive infrared night vision system optional on the XT5 Premium Luxury/Sport helps the driver to more easily detect people, animals or other objects in front of the vehicle at night. Using an infrared camera to detect heat, the system then displays the image on a monitor in the dashboard. The GLB doesn’t offer a night vision system.

The XT5’s standard lane departure warning system alerts a temporarily inattentive driver when the vehicle begins to leave its lane and gently nudges the vehicle back towards its lane. A lane departure warning system costs extra on the GLB.

Both the XT5 and the GLB have standard driver and passenger frontal airbags, front side-impact airbags, driver knee airbags, side-impact head airbags, front 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, available all wheel drive, blind spot warning systems, around view monitors and rear cross-path warning.

For its top level performance in all IIHS frontal, side, rear impact and roof-crush tests, and its standard front crash prevention system, the Insurance Institute for Highway Safety grants the XT5 the rating of “Top Safety Pick” for 2017, a rating granted to only 231 vehicles tested by the IIHS. The GLB has not been tested, yet.

Cadillac’s powertrain warranty covers the XT5 2 years and 20,000 miles longer than Mercedes covers the GLB. Any repair needed on the engine, transmission, axles, joints or driveshafts is fully covered for 6 years or 70,000 miles. Coverage on the GLB ends after only 4 years or 50,000 miles.

The XT5’s corrosion warranty is 1 year longer than the GLB’s (6 vs. 5 years).

There are over 46 percent more Cadillac dealers than there are Mercedes dealers, which makes it easier should you ever need service under the XT5’s warranty.

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 XT5’s reliability 18 points higher than the GLB.

J.D. Power and Associates rated the XT5 third among midsize premium suvs in their 2023 Initial Quality Study. The GLB isn’t in the top three in its category.

J.D. Power and Associates’ 2023 Initial Quality Study of new car owners surveyed provide the statistics that show that Cadillac vehicles are better in initial quality than Mercedes vehicles. J.D. Power ranks Cadillac above average in initial quality. With 31 more problems per 100 vehicles, Mercedes is rated below average.

J.D. Power and Associates’ 2022 survey of the owners of three-year-old vehicles provides the long-term dependability statistics that show that Cadillac vehicles are more reliable than Mercedes vehicles. J.D. Power ranks Cadillac above average in long-term dependability. With 24 more problems per 100 vehicles in the first three years of ownership, Mercedes is rated below average.

From surveys of all its subscribers, Consumer Reports’ January 2023 Auto Issue reports that Cadillac vehicles are more reliable than Mercedes vehicles. Consumer Reports ranks Cadillac 7 places higher in reliability than Mercedes.

The XT5’s standard 2.0 turbo 4-cylinder produces 14 more horsepower (235 vs. 221) than the GLB’s 2.0 turbo 4-cylinder. The XT5’s optional 3.6 DOHC V6 produces 89 more horsepower (310 vs. 221) and 13 lbs.-ft. more torque (271 vs. 258) than the GLB’s 2.0 turbo 4-cylinder.

As tested in Motor Trend the Cadillac XT5 V6 is faster than the Mercedes GLB:

An engine control system that can shut down some of the engine’s cylinders helps improve the XT5’s fuel efficiency. The GLB doesn’t offer a system that can shut down part of the engine.

To lower fuel costs and make buying fuel easier, the Cadillac XT5 uses regular unleaded gasoline (premium recommended with the 2.0 turbo 4-cylinder engine for maximum performance). The GLB requires premium, which can cost on average about 82.8 cents more per gallon.

The XT5 FWD’s standard fuel tank has 3.5 gallons more fuel capacity than the GLB (19.4 vs. 15.9 gallons), for longer range between fill-ups. The XT5 AWD’s standard fuel tank has 5.8 gallons more fuel capacity than the GLB (21.7 vs. 15.9 gallons).

The XT5 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.

In its Green Vehicle Guide, the U.S. Environmental Protection Agency (EPA) rates the Cadillac XT5 higher (6 to 7 out of 10) than the Mercedes GLB (5). This means the XT5 produces up to 8 pounds less smog-producing pollutants than the GLB every 15,000 miles.

A nine-speed automatic is standard on the Cadillac XT5, for better acceleration and lower engine speed on the highway. Only an eight-speed automatic is available for the GLB.

For better stopping power the XT5’s front brake rotors are larger than those on the GLB:

The XT5’s standard front and rear disc brakes are vented to help dissipate heat for shorter stops with less fading. The rear discs on the GLB are solid, not vented.

The XT5 stops much shorter than the GLB:

The Cadillac XT5’s wheels have 6 lugs for longer wheel bearing life, less chance of rotor warping and greater strength. The Mercedes GLB only has 5 wheel lugs per wheel.

The XT5 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 a smoother ride and more stable handling, the XT5’s wheelbase is 1.1 inches longer than on the GLB (112.5 inches vs. 111.4 inches).

For better handling and stability, the track (width between the wheels) on the XT5 is 1.6 inches wider in the front and 1.6 inches wider in the rear than on the GLB.

The XT5 executes Motor Trend’s “Figure Eight” maneuver quicker than the GLB 250 4MATIC (27 seconds @ .65 average G’s vs. 27.5 seconds @ .63 average G’s).

The front grille of the XT5 2.0 Turbo uses electronically controlled shutters to close off airflow and reduce drag when less engine cooling is needed. This helps improve highway fuel economy. The GLB doesn’t offer active grille shutters.

The XT5 has .1 inches more front legroom, 2.4 inches more front shoulder room, .9 inches more rear legroom and 1.4 inches more rear shoulder room than the GLB.

The XT5 has a much larger cargo volume with its rear seat up than the GLB with its rear seat up (30.2 vs. 5.1 cubic feet). The XT5 has a much larger cargo volume with its rear seat folded than the GLB with its rear seat folded (63 vs. 62 cubic feet).

The XT5’s cargo area is larger than the GLB’s in almost every dimension:

Pulling a handle automatically lowers the XT5’s rear seats, to make changing between passengers and cargo easier. The GLB doesn’t offer automatic folding seats.

The XT5 has a 1000 lbs. towing capacity. The GLB has no towing capacity.

Standard Trailer Sway Control on the XT5 uses the StabiliTrak® sensors to detect trailer sway, then uses individual brakes to counteract any swaying and help keep the tow vehicle and trailer steady. The GLB doesn’t offer electronic trailer sway control.

J.D. Power and Associates surveys of service recipients show that Cadillac service is better than Mercedes. J.D. Power ranks Cadillac second in service department satisfaction. With a 31% lower rating, Mercedes is ranked 18th.

The XT5’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 GLB does not have an oil pressure gauge.

The XT5 Premium Luxury/Sport offers an optional heads-up display that projects speed, tachometer, warning 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 GLB doesn’t offer a heads-up display.

To improve rear visibility by keeping the rear window clear, the XT5 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.

To shield the driver and front passenger’s vision over a larger portion of the windshield and side windows, the XT5 has standard extendable sun visors. The GLB doesn’t offer extendable visors.

The XT5 has standard heated front seats. Heated front seats cost extra on the GLB. The XT5 Premium Luxury/Sport 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 Cadillac XT5, based on reliability, safety and performance. The Mercedes GLB isn't recommended.

The Cadillac XT5 outsold the Mercedes GLB by 17% during 2022.