Is the Cadillac XT6 more reliable than the Mercedes-Benz GLB?

Slightly, yes. The XT6 has fewer recalls, fewer complaints per vehicle sold, and a lower estimated yearly repair cost. Both models still draw reports of lost power or electrical faults, so the lead is small. Check the VIN for open recalls on either car before you buy.

Which has more recalls, the XT6 or the GLB?

The GLB has more. Federal recall records show 30 recalls across five GLB model years, against 14 across seven XT6 model years. GLB owners also report long waits for spoiler recall parts and say some VINs fell outside the recall even though the spoiler failed.

Which is cheaper to repair?

The XT6 is cheaper. Independent repair-cost data puts it at $783 a year against $908 for the GLB. That is $125 a year, or $625 over five years. A single engine or airbag repair on the GLB could erase that gap.

What are the common problems with the Mercedes-Benz GLB?

Owners report a blank instrument cluster, often after a car wash, and a rear spoiler that detaches or lifts when the liftgate opens. Cylinder head and valve failures also appear, as do airbag warning lights that keep returning after dealer repairs.

Does the Cadillac XT6 have any safety-related complaints?

Yes. Owners report the car rolling forward after shifting into reverse and stalling from a failed fuel pump control module. One back over prevention complaint links silent rear parking alerts to a low-speed collision with a truck. Camera screens that cut to black are also common.

Last updated: 2026-10-10

Cadillac XT6 vs Mercedes-Benz GLB: Reliability Compared

More Reliable

Cadillac XT6

Good

Mercedes-Benz GLB

Good

The Cadillac XT6 edges out the Mercedes-Benz GLB on reliability. Federal records show 14 recalls for the XT6 and 30 for the GLB. The XT6 also costs less to keep up each year, though the lead is slight.

How Do the Cadillac XT6 and Mercedes-Benz GLB Generations Compare?

Only one design has ever been sold in each case, so the model year matters less than the car's history. The XT6 is a first generation (U26) model covering the 2020 through 2025 model years, and a second generation is expected for 2028. A used XT6 today shares one basic layout whatever its year. The GLB is also on its first generation (X247), sold in the US from 2020 through 2026. It received a facelift for 2024, so 2020 to 2023 cars are pre-facelift. The GLB's strongest years, 2022 and 2023, both fall before that facelift.

Verdict

The Cadillac XT6 is more reliable than the Mercedes-Benz GLB, scoring 73/100 vs 69/100.

A slight edge goes to the Cadillac XT6. Federal recall records show 14 recalls across seven model years, against 30 across five for the GLB, and independent repair-cost data puts the XT6's yearly bill lower. XT6 buyers also file far fewer complaints per vehicle sold. The gap is small, though. Each car has reports of lost power or sudden electrical failures, and each has people stuck waiting on recall parts. Check recall status by VIN on either one before you buy.

Key Differences

1Cadillac XT6 costs $125 less per year to repair
2Cadillac XT6 has 16 fewer total recalls
3Cadillac XT6 has 9.0 fewer complaints per 10k sold

Category Scoreboard

4Cadillac XT6

—

0Mercedes-Benz GLB

Reliability ScoreTotal RecallsComplaint RateAnnual Repair Cost

Cadillac XT6 vs Mercedes-Benz GLB: Which Is More Reliable?

Cadillac XT6 vs Mercedes-Benz GLB at-a-glance reliability comparison
Metric	Cadillac XT6	Mercedes-Benz GLB
Reliability Score	73/100	69/100
Years Tracked	7	5
Total Recalls	14	30
Complaints per 10k Sold	0.9	9.9
Annual Repair Cost	$783/yr	$908/yr
Year Wins	3	2

What Are the Common Problems With the Cadillac XT6 and Mercedes-Benz GLB?

Losing power is the worst theme in the XT6 reports. Drivers describe the car rolling forward after shifting into reverse, a sudden loss of motive power at 64,000 miles, and stalls traced to a failed fuel pump control module. Camera screens that cut to black are the other common complaint. The GLB's problems are more varied: a blank instrument cluster, a rear spoiler detaching at speed, cylinder head and valve failures, and airbag warning lights that return. Each model has one crash-linked area. For the XT6 it is rear parking alerts that stayed silent before a low-speed collision with a truck. For the GLB it is side airbags that did not deploy in a crash that injured 2 people.

Cadillac XT6 vs Mercedes-Benz GLB common problem areas comparison
Component	Cadillac XT6	Mercedes-Benz GLB
UNKNOWN OR OTHER	0.1Very Low	1.7Low
ELECTRICAL SYSTEM	0.1Very Low	1.4Low
STRUCTURE	—None	1.1Low
ENGINE	—None	0.9Very Low
POWER TRAIN	0.2Very Low	0.5Very Low
SUSPENSION	—None	0.6Very Low
AIR BAGS	—None	0.6Very Low
STEERING	—None	0.4Very Low
FUEL SYSTEM	—None	0.3Very Low
FORWARD COLLISION AVOIDANCE	—None	0.3Very Low
VEHICLE SPEED CONTROL	—None	0.2Very Low
BACK OVER PREVENTION	0.1Very Low	—None
SERVICE BRAKES	—None	—None
FUEL/PROPULSION SYSTEM	—None	—None

Complaints per 10,000 units sold, aggregated across all tracked model years from NHTSA owner reports.

Which Is Cheaper to Maintain: Cadillac XT6 or Mercedes-Benz GLB?

Independent repair-cost data estimates the XT6 at $783 a year and the GLB at $908. That is $125 less per year for the Cadillac, or $625 over five years. The data here does not break out shop-visit frequency or the odds of a major repair. The GLB's complaints do include engine cylinder head failures, with one owner quoted an out-of-pocket repair after a warranty dispute. Those cases are a reason to keep a repair budget.

How Does Cadillac XT6 vs Mercedes-Benz GLB Reliability Compare by Year?

Cadillac XT6 vs Mercedes-Benz GLB year-by-year reliability scores
Year	Cadillac XT6	Mercedes-Benz GLB	Edge
2024	73/1002R / 14C	72/1001R / 4C	Cadillac XT6
2023	73/1002R / 13C	74/1000R / 12C	Mercedes-Benz GLB
2022	72/1003R / 14C	75/1000R / 13C	Mercedes-Benz GLB
2021	73/1002R / 18C	65/10010R / 30C	Cadillac XT6
2020	72/1004R / 36C	59/10019R / 56C	Cadillac XT6

Best years to cross-shop: The 2024 Cadillac XT6 scored 73/100 and the 2022 Mercedes-Benz GLB scored 75/100 — the strongest shared model years that have been on the road for at least two years, where available.

Who Should Buy the Cadillac XT6 vs the Mercedes-Benz GLB?

Pick the XT6 if you want the lower recall count and the lower yearly repair bill. It suits a shopper who can live with a flaky backup camera and wants to avoid the engine and airbag complaints seen on the GLB. Avoid 2020 and 2022, its weakest years. The 2025 and 2026 cars look clean mainly because they have had less time to collect complaints, so do not treat them as the safe pick. Ask the dealer to confirm that the rear parking sensors are fitted and working, and that any powertrain or fuel pump recall work is done. Pick the GLB if you accept more recall paperwork and want a car with a strong showing in its middle years. Target 2022 or 2023, its strongest years, and skip 2020 and 2021. Before you sign, have a dealer run the VIN for open recalls on the rear spoiler and front axle carrier. Check the airbag warning light history, and look at the roof for scratches near the liftgate. Some owners reported long waits for spoiler parts, so do not buy a car with an open recall.

Cadillac XT6 vs Mercedes-Benz GLB: Common Questions

Is the Cadillac XT6 more reliable than the Mercedes-Benz GLB?: Slightly, yes. The XT6 has fewer recalls, fewer complaints per vehicle sold, and a lower estimated yearly repair cost. Both models still draw reports of lost power or electrical faults, so the lead is small. Check the VIN for open recalls on either car before you buy.
Which has more recalls, the XT6 or the GLB?: The GLB has more. Federal recall records show 30 recalls across five GLB model years, against 14 across seven XT6 model years. GLB owners also report long waits for spoiler recall parts and say some VINs fell outside the recall even though the spoiler failed.
Which is cheaper to repair?: The XT6 is cheaper. Independent repair-cost data puts it at $783 a year against $908 for the GLB. That is $125 a year, or $625 over five years. A single engine or airbag repair on the GLB could erase that gap.
What are the common problems with the Mercedes-Benz GLB?: Owners report a blank instrument cluster, often after a car wash, and a rear spoiler that detaches or lifts when the liftgate opens. Cylinder head and valve failures also appear, as do airbag warning lights that keep returning after dealer repairs.
Does the Cadillac XT6 have any safety-related complaints?: Yes. Owners report the car rolling forward after shifting into reverse and stalling from a failed fuel pump control module. One back over prevention complaint links silent rear parking alerts to a low-speed collision with a truck. Camera screens that cut to black are also common.

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How we score the Cadillac XT6 and Mercedes-Benz GLB

Scores weight complaint severity at 35%, repair costs at 30%, recall impact at 20%, and the spread of complaints across systems at 15%, with complaint counts adjusted for US sales. Read the full methodology.

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