Is the Audi A4 more reliable than the Mercedes-Benz A-Class?

Based on our data, the Audi A4 is more reliable with an average score of 73/100 compared to 56/100. That's a significant difference worth considering.

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

The Mercedes-Benz A-Class has more recalls (55) 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 A-Class?

Adjusted for sales volume, the Audi A4 has a lower complaint rate at 2.8 per 10,000 vehicles sold versus 30.2 for the Mercedes-Benz A-Class. Normalizing by sales gives a fairer comparison than raw totals.

Last updated: 2026-05-15

Audi A4 vs Mercedes-Benz A-Class: Reliability Compared

More Reliable

Audi A4

Good

Mercedes-Benz A-Class

Mixed

Choosing between the Audi A4 and the Mercedes-Benz A-Class? 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 56/100. Scroll down for the full year-by-year breakdown, common problem areas, and repair cost comparison.

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

As of April 2026, the Audi A4 is in its sixth generation, following the fifth generation (B9), which spanned from 2016 to 2023, including a significant facelift in 2020. The B9 was a mature platform by the end of its cycle, typically offering refined reliability. The Mercedes-Benz A-Class, on the other hand, was in its fourth generation (W177) from 2019 to 2023. Being relatively early in its cycle, the W177 might have experienced the teething issues often associated with newer platforms, especially in its initial years. Buyers should consider that mature platforms, like the later B9 A4, generally have more settled reliability compared to models early in their generation like the W177 A-Class.

Verdict

The Audi A4 is more reliable than the Mercedes-Benz A-Class, scoring 73/100 vs 56/100.

The Audi A4 demonstrates a stronger reliability profile compared to the Mercedes-Benz A-Class, with an average reliability score of 73/100 versus 56/100 for the A-Class. The A4 also benefits from a lower owner complaint rate of 2.8 per 10,000 units sold, significantly outpacing the A-Class's 30.2 complaints per 10,000. Additionally, the A4 has experienced fewer recalls (16) over its production span compared to the A-Class's 55 recalls. While both models share common issues with their electrical systems and power trains, the A4 offers a more dependable ownership experience with lower independent repair cost estimates at $739 annually.

Key Differences

1Audi A4 has 39 fewer total recalls
2Audi A4 has 27.4 fewer complaints per 10k sold
3Audi A4 scores 17 points higher in reliability

Category Scoreboard

3Audi A4

—

0Mercedes-Benz A-Class

Reliability ScoreTotal RecallsComplaint Rate

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

Audi A4 vs Mercedes-Benz A-Class at-a-glance reliability comparison
Metric	Audi A4	Mercedes-Benz A-Class
Reliability Score	73/100	56/100
Years Tracked	6	7
Total Recalls	16	55
Complaints per 10k Sold	2.8	30.2
Year Wins	4	0

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

The Audi A4 exhibits a significant concentration of issues in the electrical system, with 121 complaints and two linked to crashes, indicating a potential reliability concern in this area. In contrast, the Mercedes-Benz A-Class shows a more even distribution of complaints across various components, with the most notable being the electrical system at 35 complaints, though it has a higher proportion of crash-linked incidents at five. Additionally, the Mercedes-Benz A-Class has a more considerable number of complaints related to the power train, totaling 17 with two linked to crashes, suggesting a potential vulnerability not as pronounced in the Audi A4. Both vehicles have similar numbers of airbag-related complaints, but the Audi A4's electrical issues stand out as a primary area for concern.

Audi A4 vs Mercedes-Benz A-Class common problem areas comparison
Component	Audi A4	Mercedes-Benz A-Class
ELECTRICAL SYSTEM	1.9Low	7.2Above Avg
UNKNOWN OR OTHER	0.7Very Low	4.8Average
POWER TRAIN	0.1Very Low	3.5Average
STEERING	—None	1.9Low
SERVICE BRAKES	—None	1.4Low
ENGINE	—None	1.4Low
AIR BAGS	0.1Very Low	1.2Low
FUEL SYSTEM	—None	1Very Low
VEHICLE SPEED CONTROL	—None	0.8Very Low
TIRES	—None	0.6Very Low
EXTERIOR LIGHTING	—None	0.6Very Low
FUEL/PROPULSION SYSTEM	—None	0.6Very Low
SUSPENSION	—None	0.4Very Low
VISIBILITY	—None	0.4Very Low
SEATS	—None	0.4Very Low
WHEELS	—None	0.4Very Low
BACK OVER PREVENTION	0.1Very Low	—None

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 A-Class?

Based on independent repair cost data, the Audi A4 incurs an annual repair cost of $739, with an average of 0.4 repair visits per year and a 13% risk of major repairs. Unfortunately, specific data for the Mercedes-Benz A-Class is unavailable, making direct comparisons challenging. However, the Audi A4's figures provide a baseline for understanding potential costs. Considering the Audi's repair frequency and major repair risk, it appears to be a reasonably predictable choice for cost-conscious buyers. With a major repair risk of 13%, buyers should weigh this against the potential unknowns of the A-Class. Over five years, Audi's repair costs could total around $3,695, offering a clearer picture for budgeting compared to the unspecified costs of the Mercedes-Benz A-Class.

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

Audi A4 vs Mercedes-Benz A-Class year-by-year reliability scores
Year	Audi A4	Mercedes-Benz A-Class	Edge
2022	72/1004R / 3C	65/1001R / 2C	Audi A4
2021	71/1005R / 12C	58/10015R / 11C	Audi A4
2020	65/1003R / 122C	59/1009R / 18C	Audi A4
2018	71/1004R / 35C	48/10010R / 52C	Audi A4

Best years to cross-shop: The 2022 Audi A4 scored 72/100 and the 2022 Mercedes-Benz A-Class scored 65/100 — these represent the strongest model years in our tracking range.

Who Should Buy the Audi A4 vs the Mercedes-Benz A-Class?

If you prioritize reliability and lower running costs, the Audi A4 is a stronger choice. With a reliability score of 73/100 and an estimated annual repair cost of $739, it offers a balanced blend of dependability and affordability. The A4's owner complaints rate is low at 2.8 per 10,000 sold, and it has a modest repair frequency of 0.4 times per year. While it has had 16 recalls, its major repair risk of 13% is reasonable for its class. On the other hand, if you're considering the Mercedes-Benz A-Class, be prepared for potential challenges. Its reliability score is 56/100, and it faces a significant number of recalls at 55. The owner complaints rate is notably higher at 30.2 per 10,000 sold. While specific repair cost and frequency data are not available, these factors suggest potentially higher maintenance efforts. Choose the Audi A4 for a more reliable and cost-effective ownership experience.

Audi A4 vs Mercedes-Benz A-Class: Common Questions

Is the Audi A4 more reliable than the Mercedes-Benz A-Class?: Based on our data, the Audi A4 is more reliable with an average score of 73/100 compared to 56/100. That's a significant difference worth considering.
Which has more recalls, the Audi A4 or the Mercedes-Benz A-Class?: The Mercedes-Benz A-Class has more recalls (55) 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 A-Class?: Adjusted for sales volume, the Audi A4 has a lower complaint rate at 2.8 per 10,000 vehicles sold versus 30.2 for the Mercedes-Benz A-Class. Normalizing by sales gives a fairer comparison than raw totals.

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More Mercedes-Benz A-Class 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

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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