Is the Acura TLX more reliable than the Mercedes-Benz C-Class?

Yes, by a large margin. The TLX has a good reliability standing and the C-Class is mixed. Owners filed 12.6 complaints per 10,000 TLX sold versus 18.3 for the C-Class. The C-Class also has far more reports of sudden power loss and electrical failure.

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

The C-Class has far more. Federal recall records show 767 recalls across its eight model years, against 22 for the TLX across its eight. Whichever car you consider, check the VIN for open recalls before you buy.

What is the biggest problem with the Acura TLX?

Connecting rod bearing failure. The usual warning is a ticking or knocking that gets louder until the engine seizes or stalls. Owners also report parts backorders for the repair. One failure came at 88,000 miles, with an out-of-warranty quote of $20k.

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

Electrical faults and power loss lead. A 48-volt battery warning can come first, then the car loses drive power and coasts to a stop. Owners also report worn valve seats or cylinder head damage, shaking steering, and roof panels coming loose near the sunroof.

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

For the TLX, avoid 2019 and 2021, its weakest years. For the C-Class, avoid 2020 and 2021. The newest years of each look stronger, but they have had less time to collect complaints, so inspect any car closely.

Last updated: 2026-10-10

Acura TLX vs Mercedes-Benz C-Class: Reliability Compared

More Reliable

Acura TLX

Good

Mercedes-Benz C-Class

Mixed

Reliability favors the Acura TLX over the Mercedes-Benz C-Class by a wide margin. Federal recall records show 22 recalls against 767. The C-Class also draws more owner complaints per car sold, led by sudden power loss and electrical faults, while the TLX's main flaw is engine rod bearing failure.

How Do the Acura TLX and Mercedes-Benz C-Class Generations Compare?

Second-generation cars make up the newer half of the TLX range. That generation covers 2021 through 2025, with a facelift in 2024. The first generation ran 2015 to 2020 and was facelifted in 2018, so a shopper sees late first-generation cars from 2018 to 2020 beside second-generation cars. The weak 2021 year was the first of the second generation. For the C-Class, the fourth generation ran 2015 to 2021 with a facelift in 2018, and the fifth generation began in 2022. The weak 2020 and 2021 years were both late fourth-generation cars. Fifth-generation cars have had less time to build a complaint record.

Verdict

The Acura TLX is more reliable than the Mercedes-Benz C-Class, scoring 75/100 vs 55/100.

The more reliable car is the Acura TLX, and the gap is large. Its standing is good, while the C-Class is mixed. Owners filed fewer complaints per car sold on the TLX, and federal recall records show 22 recalls against 767 for the Mercedes. The deciding issue is the kind of failure. The C-Class loses power and electronics across several systems. The TLX has one serious flaw, connecting rod bearing failure, but most of its other problem areas are smaller and more scattered.

Key Differences

1Acura TLX has 745 fewer total recalls
2Acura TLX scores 20 points higher in reliability
3Acura TLX has 5.7 fewer complaints per 10k sold

Category Scoreboard

3Acura TLX

—

0Mercedes-Benz C-Class

Reliability ScoreTotal RecallsComplaint Rate

Acura TLX vs Mercedes-Benz C-Class: Which Is More Reliable?

Acura TLX vs Mercedes-Benz C-Class at-a-glance reliability comparison
Metric	Acura TLX	Mercedes-Benz C-Class
Reliability Score	75/100	55/100
Years Tracked	8	8
Total Recalls	22	767
Complaints per 10k Sold	12.6	18.3
Year Wins	7	0

What Are the Common Problems With the Acura TLX and Mercedes-Benz C-Class?

Concentrated trouble defines the Acura: connecting rod bearings fail, with ticking or knocking that grows until the engine seizes, and owners report parts backorders. The rest is mostly idle stop that fails to restart the engine and a hard bang into second gear. The Mercedes spreads trouble wider. A 48-volt battery warning can lead to sudden loss of drive power, screens go blank, and misfires bring limp mode. Roof panels have come loose near the panoramic sunroof. Only the C-Class has crash-linked reports in electrical (12) and steering (13), and its power train count (10) is far above the TLX's one.

Acura TLX vs Mercedes-Benz C-Class common problem areas comparison
Component	Acura TLX	Mercedes-Benz C-Class
ELECTRICAL SYSTEM	1.6Low	2.7Low
POWER TRAIN	2.7Low	1.2Low
ENGINE	1.7Low	1.9Low
UNKNOWN OR OTHER	0.9Very Low	1.8Low
STEERING	0.5Very Low	0.8Very Low
SERVICE BRAKES	0.6Very Low	0.5Very Low
ENGINE AND ENGINE COOLING	1Very Low	—None
FUEL SYSTEM	0.6Very Low	0.2Very Low
FORWARD COLLISION AVOIDANCE	0.5Very Low	0.3Very Low
STRUCTURE	0.1Very Low	0.7Very Low
AIR BAGS	0.3Very Low	0.4Very Low
FUEL/PROPULSION SYSTEM	0.5Very Low	—None
SUSPENSION	0.3Very Low	0.1Very Low
VEHICLE SPEED CONTROL	0.1Very Low	0.3Very Low
TIRES	—None	0.2Very Low
WHEELS	—None	0.2Very Low
SEAT BELTS	0.1Very Low	—None
BACK OVER PREVENTION	—None	0.1Very Low
VISIBILITY	—None	0.1Very Low
SEATS	—None	—None

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

How Does Acura TLX vs Mercedes-Benz C-Class Reliability Compare by Year?

Acura TLX vs Mercedes-Benz C-Class year-by-year reliability scores
Year	Acura TLX	Mercedes-Benz C-Class	Edge
2024	80/1001R / 4C	69/1007R / 20C	Acura TLX
2023	79/1002R / 13C	53/10083R / 209C	Acura TLX
2022	75/1003R / 26C	47/10082R / 271C	Acura TLX
2021	71/1003R / 79C	47/100149R / 314C	Acura TLX
2020	71/1004R / 59C	43/100170R / 377C	Acura TLX
2019	69/1005R / 87C	50/100161R / 477C	Acura TLX
2018	71/1003R / 90C	51/100115R / 518C	Acura TLX

Best years to cross-shop: The 2024 Acura TLX scored 80/100 and the 2024 Mercedes-Benz C-Class scored 69/100 — the strongest shared model years that have been on the road for at least two years, where available.

Who Should Buy the Acura TLX vs the Mercedes-Benz C-Class?

Pick the TLX if you want the lower risk of surprise breakdowns and fewer recalls. Look at 2024 and 2025 first, but those years have had the least time to collect complaints, so do not treat them as proven. Avoid 2019 and 2021. Whatever year you choose, ask for engine service records and listen for knocking on a cold start. Walk away from any car with a ticking engine. Pick the C-Class only if the Mercedes interior and driving feel matter more than reliability, and you can absorb out-of-warranty bills. Reports include cylinder head work from $7,200 to over $10,000 and a $10,484 sunroof glass quote. Avoid 2020 and 2021, the weakest years. The 2024 and 2026 cars look stronger, but 2026 in particular is young. Before buying, test the steering on a rough highway, check the roof panels beside the sunroof, and have the electrical system scanned for fault codes.

Acura TLX vs Mercedes-Benz C-Class: Common Questions

Is the Acura TLX more reliable than the Mercedes-Benz C-Class?: Yes, by a large margin. The TLX has a good reliability standing and the C-Class is mixed. Owners filed 12.6 complaints per 10,000 TLX sold versus 18.3 for the C-Class. The C-Class also has far more reports of sudden power loss and electrical failure.
Which has more recalls, the TLX or the C-Class?: The C-Class has far more. Federal recall records show 767 recalls across its eight model years, against 22 for the TLX across its eight. Whichever car you consider, check the VIN for open recalls before you buy.
What is the biggest problem with the Acura TLX?: Connecting rod bearing failure. The usual warning is a ticking or knocking that gets louder until the engine seizes or stalls. Owners also report parts backorders for the repair. One failure came at 88,000 miles, with an out-of-warranty quote of $20k.
What goes wrong on the Mercedes-Benz C-Class?: Electrical faults and power loss lead. A 48-volt battery warning can come first, then the car loses drive power and coasts to a stop. Owners also report worn valve seats or cylinder head damage, shaking steering, and roof panels coming loose near the sunroof.
Which model years of the TLX and C-Class should I avoid?: For the TLX, avoid 2019 and 2021, its weakest years. For the C-Class, avoid 2020 and 2021. The newest years of each look stronger, but they have had less time to collect complaints, so inspect any car closely.

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Decided between Acura TLX and Mercedes-Benz C-Class? Run a VIN check before you buy — uncover hidden accidents, title issues, and open recalls.

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How we score the Acura TLX 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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