Is the Audi A4 more reliable than the Mercedes-Benz CLA?

Based on our data, the Audi A4 is more reliable with an average score of 73/100 compared to 46/100. That's a significant difference worth considering.

Which has more recalls, the Audi A4 or the Mercedes-Benz CLA?

The Mercedes-Benz CLA has more recalls (606) compared to the Audi A4 (16). 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 Audi A4 or the Mercedes-Benz CLA?

Adjusted for sales volume, the Audi A4 has a lower complaint rate at 2.8 per 10,000 vehicles sold versus 46 for the Mercedes-Benz CLA. Normalizing by sales gives a fairer comparison than raw totals.

Last updated: 2026-05-15

Audi A4 vs Mercedes-Benz CLA: Reliability Compared

More Reliable

Audi A4

Good

Mercedes-Benz CLA

Mixed

Choosing between the Audi A4 and the Mercedes-Benz CLA? 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 midsize sedans.

Our reliability scores are based on NHTSA recall and complaint data, independent repair cost estimates, and sales-normalized complaint rates. The Audi A4 currently leads with an average score of 73/100 compared to 46/100. Scroll down for the full year-by-year breakdown, common problem areas, and repair cost comparison.

How Do the Audi A4 and Mercedes-Benz CLA Generations Compare?

As of 2026, the Audi A4 is in its fifth generation (B9), which debuted in 2016 and received a significant facelift in 2020. This generation is now mature, suggesting that many initial bugs have likely been sorted out, making it potentially more reliable for buyers. In contrast, the Mercedes-Benz CLA is in its second generation (C118), introduced in 2019 and refreshed in 2023. The CLA is still relatively early in its generation cycle, which can sometimes mean lingering issues from its redesign might still be present. While newer platforms can have first-year issues, mature ones like the A4's B9 tend to be well-sorted, offering more reliability.

Verdict

The Audi A4 is more reliable than the Mercedes-Benz CLA, scoring 73/100 vs 46/100.

The Audi A4 demonstrates superior reliability compared to the Mercedes-Benz CLA, with an average reliability score of 73 out of 100 versus the CLA's 46. Despite having 16 recalls over six years, the A4 has a significantly lower owner complaint rate of 2.8 per 10,000 sold, compared to 46 for the CLA, which has experienced an alarming 606 recalls over seven years. The A4's estimated annual repair cost of $739 further underscores its reliability advantage. Key differentiators include the CLA's higher incidence of electrical and engine issues, making the Audi A4 the more dependable choice.

Key Differences

1Audi A4 has 590 fewer total recalls
2Audi A4 has 43.2 fewer complaints per 10k sold
3Audi A4 scores 27 points higher in reliability

Category Scoreboard

3Audi A4

—

0Mercedes-Benz CLA

Reliability ScoreTotal RecallsComplaint Rate

Audi A4 vs Mercedes-Benz CLA: Which Is More Reliable?

Audi A4 vs Mercedes-Benz CLA at-a-glance reliability comparison
Metric	Audi A4	Mercedes-Benz CLA
Reliability Score	73/100	46/100
Years Tracked	6	7
Total Recalls	16	606
Complaints per 10k Sold	2.8	46
Year Wins	4	0

What Are the Common Problems With the Audi A4 and Mercedes-Benz CLA?

The Audi A4 and Mercedes-Benz CLA exhibit distinct problem profiles, with the Audi A4 primarily facing issues in the electrical system, which accounts for 121 out of 180 total complaints, including 2 crash-linked incidents. In contrast, the Mercedes-Benz CLA experiences a broader range of issues, with significant complaints in the electrical system (241), engine (175), and power train (117), contributing to a total of 1775 complaints. Notably, the CLA has a higher frequency of crash-linked complaints across multiple categories, particularly in the air bags and steering systems, with 13 and 8 incidents respectively. While both models face electrical system challenges, the CLA's extensive list of complaints, especially in critical safety areas, suggests a more widespread reliability concern compared to the Audi A4.

Audi A4 vs Mercedes-Benz CLA common problem areas comparison
Component	Audi A4	Mercedes-Benz CLA
ELECTRICAL SYSTEM	1.9Low	6.2Average
UNKNOWN OR OTHER	0.7Very Low	4.8Average
ENGINE	—None	4.5Average
POWER TRAIN	0.1Very Low	3Low
STEERING	—None	2.3Low
AIR BAGS	0.1Very Low	1Very Low
SERVICE BRAKES	—None	1.1Low
FUEL SYSTEM	—None	1Very Low
VEHICLE SPEED CONTROL	—None	0.9Very Low
STRUCTURE	—None	0.8Very Low
FORWARD COLLISION AVOIDANCE	—None	0.4Very Low
BACK OVER PREVENTION	0.1Very Low	0.2Very Low
SUSPENSION	—None	0.2Very Low
FUEL/PROPULSION SYSTEM	—None	0.2Very Low
ENGINE AND ENGINE COOLING	—None	0.2Very Low
VISIBILITY	—None	0.1Very Low
SEAT BELTS	—None	0.1Very Low
SEATS	—None	0.1Very Low
WHEELS	—None	0.1Very Low

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

Which Is Cheaper to Maintain: Audi A4 or Mercedes-Benz CLA?

Independent repair cost data show that the Audi A4 requires an estimated $739 annually for repairs, with an average of 0.4 visits per year and a 13% risk of major repairs. While specific data for the Mercedes-Benz CLA is unavailable, industry estimates suggest that Mercedes vehicles generally have higher maintenance costs and similar repair frequencies. For cost-conscious buyers, the Audi A4 appears to offer better value. Its lower repair frequency and moderate risk of major repairs make it a more predictable and potentially less expensive option over time compared to what might be expected from the Mercedes-Benz CLA. Over five years, the A4's predictable costs could save you money and reduce the likelihood of unexpected expenses.

How Does Audi A4 vs Mercedes-Benz CLA Reliability Compare by Year?

Audi A4 vs Mercedes-Benz CLA year-by-year reliability scores
Year	Audi A4	Mercedes-Benz CLA	Edge
2022	72/1004R / 3C	38/10076R / 272C	Audi A4
2021	71/1005R / 12C	45/100149R / 318C	Audi A4
2020	65/1003R / 122C	56/10062R / 110C	Audi A4
2018	71/1004R / 35C	46/100115R / 529C	Audi A4

Best years to cross-shop: The 2022 Audi A4 scored 72/100 and the 2020 Mercedes-Benz CLA scored 56/100 — these represent the strongest model years in our tracking range.

Who Should Buy the Audi A4 vs the Mercedes-Benz CLA?

If you prioritize reliability and peace of mind, the Audi A4 is your ideal choice. With a reliability score of 73/100 and only 16 total recalls, it stands out as the more dependable option. The estimated annual repair cost is $739, which is reasonable, and the repair frequency is just 0.4 times per year, minimizing disruptions to your driving experience. The Audi A4's major repair risk is also relatively low at 13%, making it a solid choice for those who want to avoid unexpected expenses. On the other hand, if you are drawn to the Mercedes-Benz brand and are willing to accept higher potential costs and risks, the CLA might still appeal to you. However, with a reliability score of 46/100, 606 recalls, and 46 owner complaints per 10,000 sold, be prepared for more frequent issues, especially in the electrical system and power train. If peace of mind and cost management are your priorities, the Audi A4 is the clear recommendation.

Audi A4 vs Mercedes-Benz CLA: Common Questions

Is the Audi A4 more reliable than the Mercedes-Benz CLA?: Based on our data, the Audi A4 is more reliable with an average score of 73/100 compared to 46/100. That's a significant difference worth considering.
Which has more recalls, the Audi A4 or the Mercedes-Benz CLA?: The Mercedes-Benz CLA has more recalls (606) compared to the Audi A4 (16). 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 Audi A4 or the Mercedes-Benz CLA?: Adjusted for sales volume, the Audi A4 has a lower complaint rate at 2.8 per 10,000 vehicles sold versus 46 for the Mercedes-Benz CLA. Normalizing by sales gives a fairer comparison than raw totals.

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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

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.

Repair Costs

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

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.

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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