Is the Audi A5 more reliable than the Mercedes-Benz C-Class?

Yes, by a large gap. The A5 has 91 owner complaints against 2,186 for the C-Class, and 16 recalls against 767. C-Class owners also report more serious failures, including sudden power loss, engine stalls, and shaking steering, while A5 complaints are mostly electrical.

Which has more recalls, the A5 or the C-Class?

The C-Class, by a wide margin. Federal recall records show 767 recalls across its 8 model years from 2018 to 2026. The A5 has 16 across the same span. A recall count does not tell you whether a specific car has been fixed, so check the VIN.

What is the most common Audi A5 problem?

The electrical system, with 47 complaints. The typical report describes an instrument panel that blinks and then goes dark while driving, which removes the speedometer and warning lights. In one report the dealer had to wait for parts, leaving the car unrepaired.

What goes wrong with the Mercedes-Benz C-Class?

Electrical failures lead with 323 complaints. Owners describe a 48-volt battery warning followed by lost drive power, plus a draining 12-volt battery and blank center screens. Engine misfires, limp mode, and stalls come next. Some owners report cylinder head repairs costing $7,200 to over $10,000 out of warranty.

Which model years of the A5 and C-Class should I avoid?

Avoid 2020 and 2021 for both, since those are the weakest years for each model. The newest years rank well, but they have had little time to collect complaints. For the A5, 2023 is a stronger choice with a longer record.

Last updated: 2026-10-10

Audi A5 vs Mercedes-Benz C-Class: Reliability Compared

More Reliable

Audi A5

Good

Mercedes-Benz C-Class

Mixed

The Audi A5 comes out well ahead of the Mercedes-Benz C-Class on reliability for model years 2018 to 2026. The deciding fact is volume: federal recall records show 16 recalls for the A5 against 767 for the C-Class, plus far fewer owner complaints.

How Do the Audi A5 and Mercedes-Benz C-Class Generations Compare?

Most used A5 shoppers will be looking at the second generation (RE9), sold in the US for 2018 through 2024 with a refresh in 2022. The third generation (RE10) began with 2025. The C-Class spent 2015 through 2021 in its fourth generation (W205), which got a facelift in 2018. The fifth generation (W206) began with 2022. Both models had their weakest years in 2020 and 2021. The newest years rank well for both, but they have had little time to collect complaints, so do not treat them as proven.

Verdict

The Audi A5 is more reliable than the Mercedes-Benz C-Class, scoring 76/100 vs 55/100.

Reliability favors the Audi A5 by a wide margin. Federal recall records show 16 recalls across its model years against 767 for the C-Class, and owners filed far fewer complaints on the A5. The C-Class problems are also more serious: sudden power loss, engine misfires and stalls, and shaking steering. The A5's biggest weak spot is an instrument panel that goes dark, which is a real safety concern but a narrower problem. For most shoppers, the A5 is the safer bet.

Key Differences

1Audi A5 has 751 fewer total recalls
2Audi A5 scores 21 points higher in reliability
3Audi A5 has 15.4 fewer complaints per 10k sold

Category Scoreboard

3Audi A5

—

0Mercedes-Benz C-Class

Reliability ScoreTotal RecallsComplaint Rate

Audi A5 vs Mercedes-Benz C-Class: Which Is More Reliable?

Audi A5 vs Mercedes-Benz C-Class at-a-glance reliability comparison
Metric	Audi A5	Mercedes-Benz C-Class
Reliability Score	76/100	55/100
Years Tracked	8	8
Total Recalls	16	767
Complaints per 10k Sold	2.9	18.3
Year Wins	6 (1 tied)	0 (1 tied)

What Are the Common Problems With the Audi A5 and Mercedes-Benz C-Class?

Gauge cluster failure leads the A5 list: the panel blinks, then goes dark, and takes the speedometer and warning lights with it. Smaller groups report false Pre-Sense braking, tire tread separation, and MMI reboots in reverse. The C-Class mix is heavier. Owners describe 48-volt battery warnings followed by lost drive power, misfires and limp mode, worn valve seats or damaged cylinder heads, and roof panels coming loose near the panoramic sunroof. Crash-linked reports appear in five C-Class areas: electrical, engine, power train, steering, and structure. The A5 has one crash-linked report, in steering, and it involved rear suspension hardware.

Audi A5 vs Mercedes-Benz C-Class common problem areas comparison
Component	Audi A5	Mercedes-Benz C-Class
ELECTRICAL SYSTEM	1.5Low	2.7Low
UNKNOWN OR OTHER	0.5Very Low	1.8Low
ENGINE	0.1Very Low	1.9Low
POWER TRAIN	—None	1.2Low
STEERING	0.1Very Low	0.8Very Low
STRUCTURE	—None	0.7Very Low
SERVICE BRAKES	—None	0.5Very Low
VEHICLE SPEED CONTROL	0.1Very Low	0.3Very Low
AIR BAGS	—None	0.4Very Low
TIRES	0.1Very Low	0.2Very Low
FORWARD COLLISION AVOIDANCE	—None	0.3Very Low
BACK OVER PREVENTION	0.1Very Low	0.1Very Low
FUEL SYSTEM	—None	0.2Very Low
WHEELS	—None	0.2Very Low
VISIBILITY	—None	0.1Very Low
SUSPENSION	—None	0.1Very Low
SEAT BELTS	—None	—None
SEATS	—None	—None

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

How Does Audi A5 vs Mercedes-Benz C-Class Reliability Compare by Year?

Audi A5 vs Mercedes-Benz C-Class year-by-year reliability scores
Year	Audi A5	Mercedes-Benz C-Class	Edge
2026	82/1000R / 0C	82/1000R / 0C	Tie
2023	81/1000R / 0C	53/10083R / 209C	Audi A5
2022	74/1003R / 5C	47/10082R / 271C	Audi A5
2021	71/1005R / 7C	47/100149R / 314C	Audi A5
2020	70/1005R / 60C	43/100170R / 377C	Audi A5
2019	73/1003R / 12C	50/100161R / 477C	Audi A5
2018	77/1000R / 6C	51/100115R / 518C	Audi A5

Best years to cross-shop: The 2023 Audi A5 scored 81/100 and the 2023 Mercedes-Benz C-Class scored 53/100 — the strongest shared model years that have been on the road for at least two years, where available.

Who Should Buy the Audi A5 vs the Mercedes-Benz C-Class?

Pick the A5 if you want the lower chance of a surprise breakdown or a big bill. Its complaint volume is low and its estimated repair cost is $739 a year. Target 2023, one of its strongest years and old enough to have a record. Avoid 2020 and 2021, its weakest years. Before buying, check that the instrument panel works properly and that the MMI does not reboot when you shift into reverse. Consider the C-Class only if you value its styling or ride and will accept more risk. Insist on a full service history and a pre-purchase inspection that covers the 48-volt battery system, engine misfires, and steering vibration. Skip 2020 and 2021 here too. If the car has a panoramic sunroof, look closely at the roof panels, since owners report them loosening at 25,600 to 40,000 miles. Budget for out-of-warranty repairs that owners put at $7,200 to over $10,000.

Audi A5 vs Mercedes-Benz C-Class: Common Questions

Is the Audi A5 more reliable than the Mercedes-Benz C-Class?: Yes, by a large gap. The A5 has 91 owner complaints against 2,186 for the C-Class, and 16 recalls against 767. C-Class owners also report more serious failures, including sudden power loss, engine stalls, and shaking steering, while A5 complaints are mostly electrical.
Which has more recalls, the A5 or the C-Class?: The C-Class, by a wide margin. Federal recall records show 767 recalls across its 8 model years from 2018 to 2026. The A5 has 16 across the same span. A recall count does not tell you whether a specific car has been fixed, so check the VIN.
What is the most common Audi A5 problem?: The electrical system, with 47 complaints. The typical report describes an instrument panel that blinks and then goes dark while driving, which removes the speedometer and warning lights. In one report the dealer had to wait for parts, leaving the car unrepaired.
What goes wrong with the Mercedes-Benz C-Class?: Electrical failures lead with 323 complaints. Owners describe a 48-volt battery warning followed by lost drive power, plus a draining 12-volt battery and blank center screens. Engine misfires, limp mode, and stalls come next. Some owners report cylinder head repairs costing $7,200 to over $10,000 out of warranty.
Which model years of the A5 and C-Class should I avoid?: Avoid 2020 and 2021 for both, since those are the weakest years for each model. The newest years rank well, but they have had little time to collect complaints. For the A5, 2023 is a stronger choice with a longer record.

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How we score the Audi A5 and Mercedes-Benz C-Class

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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