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

Yes, by a large margin. The A4 draws about 2.8 owner complaints per 10,000 sold, while the CLA draws 46. The CLA's reports are also more serious, including a transmission slipping into neutral at highway speed, 48V battery stalls and fires. The A4's biggest complaint is a blank or rebooting instrument cluster.

Which has more recalls, the A4 or the CLA?

The CLA has far more. Federal recall records show 606 recalls across seven CLA model years, compared with 16 across six A4 model years. Check any specific car's VIN for open recalls before buying either one, because some owners of both cars reported waiting on repair parts.

What goes wrong with the Mercedes-Benz CLA transmission?

The most common complaint is the car slipping into neutral while driving, sometimes at 70 mph, and coasting until restarted. Others describe harsh jerks, rolling backward on hills and sudden slowdowns. Dealers often could not reproduce the fault. Eight power train reports are crash-linked, so test drive any CLA on the highway.

What is the Audi A4 instrument cluster problem?

The digital cluster goes blank or keeps rebooting, sometimes while driving. The speedometer, fuel gauge and warning messages disappear. Owners say dealers quoted full-price repairs. MMI screen reboots can also cut out the backup camera and parking alerts. Test both screens on a drive before you buy.

Which A4 and CLA model years should I avoid?

For the A4, avoid 2020 and 2018, its weakest years. For the CLA, avoid 2022 and 2024. The 2023 A4 and the 2020 CLA are the safer picks. Newer years such as the 2025 A4 and 2026 CLA rank well but have had little time to collect complaints.

Last updated: 2026-10-10

Audi A4 vs Mercedes-Benz CLA: Reliability Compared

More Reliable

Audi A4

Good

Mercedes-Benz CLA

Mixed

The Audi A4 is clearly more reliable than the Mercedes-Benz CLA, with far fewer owner complaints and recalls. What decides it is severity: CLA owners report gear faults at highway speed, sudden power loss and fires. The A4's main flaw is a blank instrument cluster.

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

Facelift years deserve the closest look on both cars. The A4 belongs to the fifth generation (B9), which started in the 2016 US model year, and its facelift arrived for 2020, one of its weakest years. The 2018 A4 is also weak and came before that update. The CLA moved from its first generation, which ran 2013 to 2019, to the second generation (C118) in 2019. A facelift followed for 2023. The 2018 CLA is a first-generation car, while the 2020 and 2022 models are second-generation cars from before the facelift.

Verdict

The Audi A4 is more reliable than the Mercedes-Benz CLA, scoring 73/100 vs 48/100.

Reliability favors the A4 by a wide margin. Owners filed about 2.8 complaints per 10,000 A4s sold, against 46 per 10,000 for the CLA. Federal recall records show 16 recalls across six A4 model years and 606 across seven CLA model years. The A4's worst fault, a cluster that goes dark or reboots, is a real nuisance. The CLA's reports describe stalls, a transmission that slips into neutral and fires, which carry far more risk to you and to other drivers.

Key Differences

1Audi A4 has 590 fewer total recalls
2Audi A4 has 43.2 fewer complaints per 10k sold
3Audi A4 scores 25 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	48/100
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?

Electrical faults top both lists, but they differ in kind. On the A4, the instrument cluster goes blank or keeps rebooting, and MMI screen restarts cut out the backup camera. On the CLA, owners describe 48V battery warnings followed by a stall, and five filings involve fire, though many electrical filings name other Mercedes models. The CLA also has crash-linked reports in steering and power train, including a transmission that slips into neutral at 70 mph and a locked steering wheel. The A4 has no crash-linked steering or power train reports. Its few crash-linked reports sit in air bags, suspension and electrical.

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	4.1Average
ENGINE	—None	4.5Average
POWER TRAIN	0.1Very Low	3Low
STEERING	—None	2.2Low
STRUCTURE	—None	1.4Low
AIR BAGS	0.1Very Low	1Very Low
FUEL SYSTEM	—None	1Very Low
SERVICE BRAKES	—None	0.9Very Low
VEHICLE SPEED CONTROL	—None	0.9Very Low
WHEELS	—None	0.6Very Low
TIRES	—None	0.6Very Low
FORWARD COLLISION AVOIDANCE	—None	0.4Very Low
BACK OVER PREVENTION	0.1Very Low	0.2Very Low
VISIBILITY	—None	0.3Very Low
SUSPENSION	—None	0.2Very Low
SEAT BELTS	—None	0.1Very Low
SEATS	—None	0.1Very Low

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

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 — the strongest shared model years that have been on the road for at least two years, where available.

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

Pick the A4 if you want the lower-risk car. Its complaint volume is small, and shops see it rarely. Target 2023, which stands among the strongest years. The 2025 model also ranks well, but it has had less time to collect complaints. Avoid 2020 and 2018, the weakest years. Before you buy, check that the instrument cluster and MMI screen run without rebooting, and confirm any airbag recall work is finished, since some owners waited on parts. Pick the CLA only if you accept more risk and can inspect the car closely. The best choice is a 2020, one of its strongest years. The 2026 model also ranks well, but it is too new to judge. Skip 2022 and 2024, the weakest years. Ask for proof that open recalls were completed. Test drive on the highway to check for gear slips, and ask whether the crankcase ventilation fault (code P052E) or sunroof glass were ever repaired. Owners quoted about $2,000 for the ventilation fix.

Audi A4 vs Mercedes-Benz CLA: Common Questions

Is the Audi A4 more reliable than the Mercedes-Benz CLA?: Yes, by a large margin. The A4 draws about 2.8 owner complaints per 10,000 sold, while the CLA draws 46. The CLA's reports are also more serious, including a transmission slipping into neutral at highway speed, 48V battery stalls and fires. The A4's biggest complaint is a blank or rebooting instrument cluster.
Which has more recalls, the A4 or the CLA?: The CLA has far more. Federal recall records show 606 recalls across seven CLA model years, compared with 16 across six A4 model years. Check any specific car's VIN for open recalls before buying either one, because some owners of both cars reported waiting on repair parts.
What goes wrong with the Mercedes-Benz CLA transmission?: The most common complaint is the car slipping into neutral while driving, sometimes at 70 mph, and coasting until restarted. Others describe harsh jerks, rolling backward on hills and sudden slowdowns. Dealers often could not reproduce the fault. Eight power train reports are crash-linked, so test drive any CLA on the highway.
What is the Audi A4 instrument cluster problem?: The digital cluster goes blank or keeps rebooting, sometimes while driving. The speedometer, fuel gauge and warning messages disappear. Owners say dealers quoted full-price repairs. MMI screen reboots can also cut out the backup camera and parking alerts. Test both screens on a drive before you buy.
Which A4 and CLA model years should I avoid?: For the A4, avoid 2020 and 2018, its weakest years. For the CLA, avoid 2022 and 2024. The 2023 A4 and the 2020 CLA are the safer picks. Newer years such as the 2025 A4 and 2026 CLA rank well but have had little time to collect complaints.

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How we score the Audi A4 and Mercedes-Benz CLA

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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