Is the Audi A4 more reliable than the BMW 3-Series?

Based on our data, the Audi A4 is more reliable with an average score of 73/100 compared to 69/100. The difference is modest, so both are reasonable choices.

Which has more recalls, the Audi A4 or the BMW 3-Series?

The BMW 3-Series has more recalls (45) 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 BMW 3-Series?

Adjusted for sales volume, the BMW 3-Series has a lower complaint rate at 1.1 per 10,000 vehicles sold versus 2.8 for the Audi A4. Normalizing by sales gives a fairer comparison than raw totals.

Which is cheaper to maintain, the Audi A4 or the BMW 3-Series?

Based on independent repair cost estimates, the Audi A4 is cheaper to maintain at $739/year versus $773/year for the BMW 3-Series.

Is the Audi A4 or BMW 3-Series safer?

Both the Audi A4 and BMW 3-Series received the same NHTSA overall safety rating of 5/5 stars. Check the frontal, side, and rollover sub-ratings above for a more detailed comparison.

Last updated: 2026-07-26

Audi A4 vs BMW 3-Series: Reliability Compared

More Reliable

Audi A4

Good

BMW 3-Series

Good

Choosing between the Audi A4 and the BMW 3-Series? 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 69/100. Scroll down for the full year-by-year breakdown, common problem areas, and repair cost comparison.

How Do the Audi A4 and BMW 3-Series Generations Compare?

As of 2026, the BMW 3-Series is in its seventh generation (G20), which was introduced in 2019 and received a facelift in 2022. This positions the G20 late in its generation cycle, often indicating a more mature and reliable platform as early production issues typically get resolved over time. In contrast, the Audi A4 is in its fifth generation (B9), which began in 2016 and was facelifted in 2020. The B9 is further along in its lifecycle but still within its generation, suggesting it has likely benefited from refinements. Generally, vehicles later in their generation cycle, like the current 3-Series and A4, tend to offer improved reliability compared to early models.

Verdict

The Audi A4 is more reliable than the BMW 3-Series, scoring 73/100 vs 69/100.

The Audi A4 edges out the BMW 3-Series in reliability, with an average score of 73/100 compared to the BMW's 69/100. While the BMW 3-Series has a lower owner complaint rate at 1.1 per 10,000 sold, the Audi A4's recall history is significantly better, with only 16 recalls over six years versus BMW's 45 over nine years. Both models have similar estimated annual repair costs, with the A4 at $739 and the 3-Series at $773. However, the A4's fewer recalls and higher reliability score make it a slightly more dependable choice.

Key Differences

1Audi A4 costs $34 less per year to repair
2Audi A4 has 29 fewer total recalls
3Audi A4 scores 4 points higher in reliability

Category Scoreboard

4Audi A4

—

2BMW 3-Series

Reliability ScoreTotal RecallsComplaint RateAnnual Repair CostRepair FrequencyMajor Repair RiskSafety Rating

Audi A4 vs BMW 3-Series: Which Is More Reliable?

Audi A4 vs BMW 3-Series at-a-glance reliability comparison
Metric	Audi A4	BMW 3-Series
Reliability Score	73/100	69/100
Years Tracked	6	9
Total Recalls	16	45
Complaints per 10k Sold	2.8	1.1
Annual Repair Cost	$739/yr	$773/yr
Repair Frequency	0.4/yr	1/yr
Major Repair Risk	13%	12%
Safety RatingNHTSA overall	2025 NHTSA	2026 NHTSA
Frontal
Side
Rollover
Year Wins	6	0

What Are the Common Problems With the Audi A4 and BMW 3-Series?

The BMW 3-Series and Audi A4 both exhibit notable issues, but the specific problem areas differ significantly. The BMW 3-Series has a more balanced distribution of complaints across various systems, with notable concerns in the electrical system and air bags, the latter having a higher proportion of crash-linked complaints. In contrast, the Audi A4 predominantly suffers from electrical system issues, accounting for a substantial 121 out of 180 total complaints, though only two are crash-linked. Additionally, the BMW 3-Series experiences more engine-related complaints, while the Audi A4 shows a significant number of complaints in the "unknown or other" category, indicating potential issues not clearly defined.

Audi A4 vs BMW 3-Series common problem areas comparison
Component	Audi A4	BMW 3-Series
ELECTRICAL SYSTEM	1.9Low	0.2Very Low
UNKNOWN OR OTHER	0.7Very Low	0.2Very Low
POWER TRAIN	0.1Very Low	0.1Very Low
AIR BAGS	0.1Very Low	0.1Very Low
ENGINE	—None	0.2Very Low
BACK OVER PREVENTION	0.1Very Low	—None
SUSPENSION	—None	—None
SERVICE BRAKES	—None	—None
FUEL SYSTEM	—None	—None
FUEL/PROPULSION SYSTEM	—None	—None
TIRES	—None	—None
EXTERIOR LIGHTING	—None	—None
VEHICLE SPEED CONTROL	—None	—None
STRUCTURE	—None	—None
VISIBILITY	—None	—None
WHEELS	—None	—None
STEERING	—None	—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 BMW 3-Series?

The BMW 3-Series incurs an annual repair cost of $773, slightly higher than the Audi A4's $739. While this translates to a modest $34 difference annually, amounting to $170 over five years, it's essential to consider more than just the annual expense. The BMW requires approximately one repair visit per year, compared to the Audi's 0.4 visits, indicating the BMW may demand more frequent attention. Additionally, the BMW has a 12% risk of major repairs, slightly lower than the Audi's 13%. For cost-conscious buyers, the Audi A4 presents a better value, offering fewer repair visits and a comparably low risk of significant repairs.

How Does Audi A4 vs BMW 3-Series Reliability Compare by Year?

Audi A4 vs BMW 3-Series year-by-year reliability scores
Year	Audi A4	BMW 3-Series	Edge
2025	81/1000R / 0C	71/1001R / 1C	Audi A4
2023	77/1000R / 8C	70/1004R / 9C	Audi A4
2022	72/1004R / 3C	70/1003R / 6C	Audi A4
2021	71/1005R / 12C	67/1009R / 22C	Audi A4
2020	65/1003R / 122C	64/10012R / 45C	Audi A4
2018	71/1004R / 35C	65/1005R / 58C	Audi A4

Best years to cross-shop: The 2025 Audi A4 scored 81/100 and the 2025 BMW 3-Series scored 71/100 — these represent the strongest model years in our tracking range.

Who Should Buy the Audi A4 vs the BMW 3-Series?

If you prioritize a more reliable option with fewer recalls, consider the Audi A4. With a reliability score of 73/100 and only 16 total recalls, it presents a more stable choice. The A4 also benefits from a lower repair frequency of 0.4 times per year and a slightly lower estimated annual repair cost of $739. However, be mindful of its higher owner complaints rate of 2.8 per 10,000 sold, indicating some user dissatisfaction. On the other hand, if you value lower owner complaints and are willing to accept a slightly lower reliability score, the BMW 3-Series might be the right fit. Despite its 69/100 reliability score and higher total recalls at 45, it boasts fewer owner complaints at 1.1 per 10,000 sold. The estimated annual repair cost is marginally higher at $773, but with a major repair risk of 12%, it's comparable to the A4. Choose the 3-Series if you appreciate a refined driving experience and can manage its more frequent repair needs.

Audi A4 vs BMW 3-Series: Common Questions

Is the Audi A4 more reliable than the BMW 3-Series?: Based on our data, the Audi A4 is more reliable with an average score of 73/100 compared to 69/100. The difference is modest, so both are reasonable choices.
Which has more recalls, the Audi A4 or the BMW 3-Series?: The BMW 3-Series has more recalls (45) 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 BMW 3-Series?: Adjusted for sales volume, the BMW 3-Series has a lower complaint rate at 1.1 per 10,000 vehicles sold versus 2.8 for the Audi A4. Normalizing by sales gives a fairer comparison than raw totals.
Which is cheaper to maintain, the Audi A4 or the BMW 3-Series?: Based on independent repair cost estimates, the Audi A4 is cheaper to maintain at $739/year versus $773/year for the BMW 3-Series.
Is the Audi A4 or BMW 3-Series safer?: Both the Audi A4 and BMW 3-Series received the same NHTSA overall safety rating of 5/5 stars. Check the frontal, side, and rollover sub-ratings above for a more detailed comparison.

More Audi A4 comparisons

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More BMW 3-Series 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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