Compare the2025 Cadillac XT5VS 2025 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.

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.

The Cadillac XT5 offers an optional Surround Vision and it also offers an optional rear camera washer to make backing always safe, regardless of road dirt or grime, while the Mercedes GLB doesn’t offer a camera washer, requiring manual cleaning.

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.

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 47 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 first among midsize premium suvs in their 2024 Initial Quality Study. The GLB isn’t in the top three in its category.

J.D. Power and Associates’ 2024 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 With 22 fewer problems per 100 vehicles in the first three years of ownership, J.D. Power ranks Cadillac higher 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 hybrid. 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 hybrid.

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 84.9 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.

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 2.3 inches wider in the front and 2.3 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. 27.4 seconds @ .62 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 vs. 12.4 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.

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.

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.

Both the XT5 and the GLB have standard heated front seats. 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.

Optional air-conditioned seats in the XT5 Premium Luxury/Sport keep the driver and front passenger comfortable and take the sting out of hot seats in Summer. The GLB doesn’t offer air-conditioned seats.

Insurance will cost less for the XT5 owner. The Complete Car Cost Guide estimates that insurance for the XT5 will cost $880 to $1645 less than the GLB over a five-year period.

Consumer Reports® recommends the Cadillac XT5, based on reliability, safety and performance.

The Cadillac XT5 outsold the Mercedes GLB by 57% during 2024.