Last updated: 2026-07-26

Cadillac XT4 vs Mercedes-Benz GLB: Reliability Compared

More ReliableCadillac XT4 reliability comparison

Cadillac XT4

72
GoodReliability score: 72 out of 100, rated Good
VS
Mercedes-Benz GLB reliability comparison

Mercedes-Benz GLB

69
GoodReliability score: 69 out of 100, rated Good

Choosing between the Cadillac XT4 and the Mercedes-Benz GLB? This page compares their reliability scores, NHTSA recall history, owner-reported complaints, and estimated annual repair costs so you can make a confident long-term ownership decision between these two compact suvs.

Our reliability scores are based on NHTSA recall and complaint data, independent repair cost estimates, and sales-normalized complaint rates. The Cadillac XT4 currently leads with an average score of 72/100 compared to 69/100. Scroll down for the full year-by-year breakdown, common problem areas, and repair cost comparison.

How Do the Cadillac XT4 and Mercedes-Benz GLB Generations Compare?

As of 2026, the Cadillac XT4 is in its first generation, which began in 2019 and concluded in 2025. It received a significant facelift in 2024, marking a late-stage refinement in its lifecycle. Vehicles late in their generation cycle, like the XT4, often benefit from improved reliability as manufacturers have had time to address earlier production issues and optimize components based on real-world feedback. The Mercedes-Benz GLB is also in its first generation, launched in 2020, and will transition to a new generation in 2026. It underwent a facelift in 2023, suggesting enhancements to its design and technology. As a late-generation model, the GLB might offer better reliability, having ironed out initial kinks, similar to the XT4. Both models, being late in their cycles, potentially offer mature and reliable options for buyers.

Verdict

The Cadillac XT4 is more reliable than the Mercedes-Benz GLB, scoring 72/100 vs 69/100.

The Cadillac XT4 and Mercedes-Benz GLB both present challenges in reliability, yet the XT4 edges ahead with a slightly higher reliability score of 72/100 compared to the GLB's 69/100. The XT4 also has fewer owner complaints per 10,000 sold, at 7 versus the GLB's 9.9, and a significantly lower number of recalls, with 12 compared to the GLB's 30. While independent repair cost estimates are unavailable for the XT4, the GLB's estimated annual repair cost stands at $908, indicating potentially higher maintenance expenses. Overall, the XT4 demonstrates a more favorable reliability profile, particularly in terms of recall frequency and complaint rate.

Key Differences

  1. 1Cadillac XT4 has 18 fewer total recalls
  2. 2Cadillac XT4 scores 3 points higher in reliability
  3. 3Cadillac XT4 has 2.9 fewer complaints per 10k sold

Category Scoreboard

3Cadillac XT4
—
0Mercedes-Benz GLB
Reliability ScoreTotal RecallsComplaint Rate

Cadillac XT4 vs Mercedes-Benz GLB: Which Is More Reliable?

Cadillac XT4 vs Mercedes-Benz GLB at-a-glance reliability comparison
MetricCadillac XT4Mercedes-Benz GLB
Reliability Score72/10069/100
Years Tracked85
Total Recalls1230
Complaints per 10k Sold79.9
Year Wins32

What Are the Common Problems With the Cadillac XT4 and Mercedes-Benz GLB?

The Cadillac XT4 and Mercedes-Benz GLB both exhibit issues with their electrical systems, but the XT4 shows a slightly higher frequency of crash-linked complaints, notably within its electrical system and service brakes. The GLB has a broader range of complaints, with the highest number in the "unknown or other" category, and it reports issues in areas such as structure and airbags, the latter being crash-linked. While both models share concerns in the power train and engine categories, the XT4's forward collision avoidance system and the GLB's structure-related complaints highlight unique areas of concern for each vehicle. Overall, the XT4 has fewer total complaints but a more pronounced pattern of crash-linked issues compared to the GLB.

Cadillac XT4 vs Mercedes-Benz GLB common problem areas comparison
ComponentCadillac XT4Mercedes-Benz GLB
ELECTRICAL SYSTEM1.3Low1.4Low
UNKNOWN OR OTHER0.3Very Low1.7Low
POWER TRAIN1Very Low0.5Very Low
ENGINE0.3Very Low0.9Very Low
STRUCTURE—None1.1Low
SERVICE BRAKES0.7Very Low—None
SUSPENSION0.1Very Low0.6Very Low
FUEL/PROPULSION SYSTEM0.6Very Low—None
FORWARD COLLISION AVOIDANCE0.3Very Low0.3Very Low
AIR BAGS—None0.6Very Low
STEERING0.1Very Low0.4Very Low
EXTERIOR LIGHTING0.3Very Low—None
FUEL SYSTEM—None0.3Very Low
VEHICLE SPEED CONTROL—None0.2Very Low
VISIBILITY/WIPER0.1Very Low—None

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

Which Is Cheaper to Maintain: Cadillac XT4 or Mercedes-Benz GLB?

The Mercedes-Benz GLB has an annual repair cost of $908, according to industry estimates, offering a tangible figure for prospective buyers. Unfortunately, specific data for the Cadillac XT4 isn't available, making direct comparisons challenging. However, understanding typical maintenance trends for luxury SUVs can help. Generally, Mercedes-Benz vehicles are known for higher repair costs and frequency, potentially leading to increased long-term expenses. Without explicit data, the Cadillac XT4 might be a more cost-effective option for those concerned about maintenance expenses. If cost-conscious buyers prioritize lower potential repair costs and risks, the Cadillac XT4 could offer better value, assuming it doesn't significantly deviate from industry norms for similar vehicles.

How Does Cadillac XT4 vs Mercedes-Benz GLB Reliability Compare by Year?

Cadillac XT4 vs Mercedes-Benz GLB year-by-year reliability scores
YearCadillac XT4Mercedes-Benz GLBEdge
202471/1001R / 28C72/1001R / 4CMercedes-Benz GLB
202375/1000R / 12C74/1000R / 12CCadillac XT4
202272/1001R / 3C75/1000R / 13CMercedes-Benz GLB
202171/1001R / 12C65/10010R / 30CCadillac XT4
202068/1005R / 17C59/10019R / 56CCadillac XT4

Best years to cross-shop: The 2023 Cadillac XT4 scored 75/100 and the 2022 Mercedes-Benz GLB scored 75/100 — these represent the strongest model years in our tracking range.

Who Should Buy the Cadillac XT4 vs the Mercedes-Benz GLB?

If you prioritize reliability and lower incident rates, the Cadillac XT4 may be the better choice. With a reliability score of 72/100 and fewer owner complaints at 7 per 10,000 sold, it presents as a more dependable option. Despite having 12 recalls, the XT4's issues are more contained compared to the Mercedes-Benz GLB. On the other hand, if you're willing to accept slightly higher maintenance costs for luxury features, consider the Mercedes-Benz GLB. It has a reliability score of 69/100 and a higher number of recalls at 30, but it offers the prestige and advanced features typical of the Mercedes-Benz brand. Keep in mind, the estimated annual repair cost is $908, and owner complaints stand at 9.9 per 10,000 sold, indicating a potential for more frequent issues. Ultimately, if reliability and fewer recalls are your priority, the Cadillac XT4 is the way to go. However, if luxury and brand prestige are more important, and you're prepared for potentially higher repair costs, the Mercedes-Benz GLB may suit you better.

Cadillac XT4 vs Mercedes-Benz GLB: Common Questions

Is the Cadillac XT4 more reliable than the Mercedes-Benz GLB?
Based on our data, the Cadillac XT4 is more reliable with an average score of 72/100 compared to 69/100. The difference is modest, so both are reasonable choices.
Which has more recalls, the Cadillac XT4 or the Mercedes-Benz GLB?
The Mercedes-Benz GLB has more recalls (30) compared to the Cadillac XT4 (12). More recalls don't always mean worse reliability — some are minor — but it's worth reviewing what each recall covers.
Which has fewer owner complaints, the Cadillac XT4 or the Mercedes-Benz GLB?
Adjusted for sales volume, the Cadillac XT4 has a lower complaint rate at 7 per 10,000 vehicles sold versus 9.9 for the Mercedes-Benz GLB. Normalizing by sales gives a fairer comparison than raw totals.

Related Reliability Comparisons

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How We Calculate Reliability Scores

Auto Reliability Index scores are calculated on a 0–100 scale using a weighted formula that combines multiple public data sources. Each factor is weighted based on its predictive value for real-world ownership experience.

Key Ranking Factors

1

Complaint Severity

NHTSA owner complaints weighted by component category (e.g., powertrain, safety systems, electronics, cosmetic) — safety-critical issues carry more weight than cosmetic ones. Adjusted for sales volume so high-volume models aren't unfairly penalized.

2

Repair Costs

Independent reliability ratings based on repair frequency, average repair costs, and severity of typical repairs for each model.

3

Recall Impact

Number of NHTSA recalls weighted by severity. “Stop driving” and fire-risk recalls are penalized more heavily than minor software or labeling recalls.

4

Issue Diversity

Measures how many major vehicle systems (engine, transmission, electrical, braking, etc.) have recorded complaints. A vehicle with issues spread across many systems may indicate systemic quality issues.

Scores are grouped into four tiers:

  • 80–100: Excellent— Top-tier reliability, minimal issues
  • 60–79: Good— Reliable with some minor concerns
  • 40–59: Mixed— Notable issues, research before buying
  • 0–39: Risky— Significant problems, proceed with caution

Data is sourced from NHTSA recall records, owner complaint filings, and independent repair databases. Scores are recalculated as new data becomes available. While the weighting model is proprietary, all underlying data sources are public and traceable.

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