2013 Mercedes-Benz C-Class engine problems
moderate Owners of the 2013 Mercedes-Benz C-Class have filed 40 NHTSA complaints about the engine, typically surfacing around 76,000 miles at roughly $3,100 to repair (U.S. federal records, as of July 2026). Source: NHTSA Office of Defects Investigation. See engine across all vehicles →
| Model year | engine complaints |
|---|---|
| 2009 C-Class | 15 |
| 2010 C-Class | 6 |
| 2012 C-Class | 58 |
| 2013 C-Class (this page) | 40 |
| 2014 C-Class | 12 |
| 2015 C-Class | 97 |
| 2016 C-Class | 76 |
| 2017 C-Class | 60 |
Owners have filed 40 engine complaints with NHTSA against this vehicle, but no formal recall covers the issue — the federal record reflects what manufacturers have admitted, not everything owners are reporting.
The failure pattern owners describe
The 2013 C-Class with M271 engine exhibits a clear pattern of premature camshaft adjuster and timing chain failure. Owners consistently report check engine lights, cold-start grinding, hesitation, and power loss starting at 40,000–70,000 miles, regardless of maintenance discipline. One owner at 42,000 miles faced total electrical failure from internal oil leak; another at 58,000 miles hit timing chain and adjuster failure with no warning, costing $6,000 (partially covered by extended warranty to $3,600). Repair bills land between $2,800 and $7,820.
Mercedes extended the camshaft adjuster warranty to 10 years/120,000 miles for 2012–2015 models but refuses to extend timing chain coverage, leaving owners with major out-of-pocket cost once warranty expires at 50,000 miles. Two owners reported engine compartment fires; multiple others describe highway stalls at 70 mph or loss of power mid-intersection—safety-critical events. Owners found hundreds of identical complaints online and note the problem initiates "as soon as warranty ends." Dealership diagnostics are often inconclusive; some blame turbo lag, fuel ethanol, or specification-compliant operation rather than defect. One owner received a $1,000 credit toward a new vehicle as settlement instead of repair coverage.
Same Mercedes-Benz C-Class engine reports on nearby years: 2012 · 2014 · 2015 · 2016
Failure modes owners describe
Camshaft adjuster failure
Camshaft adjusters (intake and exhaust) fail prematurely, typically in the 40,000–94,000 mile range. Mercedes extended warranty coverage to 10 years/120,000 miles for 2012–2015 C-Class models (M271 engine), with damage codes 05050 and 05052. Multiple owners report check engine lights, rough starts, hesitation, and cold-start rattling. Repair costs range $2,800–$6,000.
When: 40,000–123,000 miles; typically 40,000–94,000 for initial failure
Symptoms owners cite: Check engine light (intermittent or persistent); Difficulty starting or hesitation on startup; Cold-start rattling or grinding noise (3–5 seconds); Engine hesitation during acceleration; Rough idle
Codes mentioned: P001477, P001600, P001762, P001662, P001177, P001700, P001192, P001492, P034062, P036662, P0340
Repairs/costs cited: Replacement of camshaft adjuster kit (part A 271 050 21 00 80) with magnet and seals; $2,800–$6,000 depending on additional parts needed. Extended warranty (10yr/120k mi) covers replacement under damage codes 05050 and 05052; claims require short-test fault code documentation.
Recalls/TSBs owners mention: Extended warranty program for 2012–2015 C250/SLK250 (M271 engine) covers camshaft adjuster replacement at 10 years/120,000 miles instead of original 4 years/50,000 miles. No formal recall issued. Mercedes advises checking VMI/Netstar for coverage eligibility. Owners report Mercedes refused assistance when warranty expired or declined to reimburse out-of-warranty repairs.
Timing chain and tensioner failure
Timing chain and tensioner mechanisms fail prematurely, often coinciding with or following camshaft adjuster issues. Owners report metal-on-metal grinding, knocking sounds, check engine lights, loss of power, and stalling. Repairs involve replacement of timing chain, tensioner, and sometimes lower guide rails. Costs $4,500–$7,820. Multiple owners note the problem is well-documented online and occurs in clusters across 2012–2014 model years.
When: 47,000–129,000 miles; frequently in the 50,000–89,000 range
Symptoms owners cite: Metal-on-metal or abnormal knocking/grinding sounds from engine; Check engine light; Difficult or excessive cranking to start; Loss of power while driving; Engine stall (mid-drive or at idle); Intermittent hesitation during acceleration
Codes mentioned: P0340, Timing chain/tensioner codes (unspecified in most narratives)
Repairs/costs cited: Timing chain replacement, tensioner replacement, and lower guide rail replacement; $4,500–$7,820. One owner cited $6,000 total for timing chain, camshaft adjusters, and lower guide rails; extended warranty reduced it to $3,600. No manufacturer-sponsored warranty program identified for timing chain.
Recalls/TSBs owners mention: No formal recall. Mercedes advises warranty expires at 50,000 miles; repairs beyond that are owner responsibility. One owner received $1,000 credit toward new vehicle or $500 toward CPO as settlement offer, but no systemic recall or warranty extension issued.
Oil leak into engine electronics and sensors
Internal oil leaks contaminate camshaft sensors, wiring harnesses, and engine computer systems, causing electrical failures, check engine lights, and intermittent driveability issues. One owner reported oil leaking into computer causing total electrical failure at 42,000 miles; another reported oil on wires and sensors at 129,000 miles. Owners describe the issue as an inherent design flaw not detectable during routine service.
When: 42,000–129,000 miles
Symptoms owners cite: Check engine light; Oil on camshaft sensors and wiring; Water/moisture in subfloor affecting sensors; Electrical intermittency; Engine-control system failure; Sudden uncontrollable behavior warning
Codes mentioned: P0340
Repairs/costs cited: One owner cited need for new engine; another required wiring harness and wire replacement with engine dismantling. No specific repair cost provided; one insurance company deemed vehicle total loss.
Recalls/TSBs owners mention: Mercedes acknowledged oil leak was internal design issue and not detectable during routine service inspection. No recall or warranty extension noted. One owner reported Mercedes recommended new engine but did not cover cost.
Engine stall and loss of power while driving
Engine shuts down unexpectedly while driving at highway or city speeds, sometimes with no warning. In one case at 70 mph, vehicle lost power and shook violently; in another at traffic light, engine stopped mid-intersection. Check engine lights typically follow. One incident involved power loss at 80 km/h in traffic; another at 35 mph with check engine light. Safety-critical failures.
When: Varies; reported across broad mileage range; some at <60k miles
Symptoms owners cite: Sudden loss of power while driving; Engine shutdown mid-drive; Check engine light (before or after stall); Vibration/shaking; Vehicle unable to accelerate past certain speed (e.g., 80 km/h)
Codes mentioned: P0340, Fault-pump code (narrative #4)
Repairs/costs cited: Narrative #4 cited throttle actuator replacement; fuel pump replacement attempted in another case. Root causes often attributed to camshaft adjusters or timing issues in follow-up diagnostics.
Recalls/TSBs owners mention: Repair attempts often unsuccessful or temporary. One owner reported dealer blamed 13% ethanol in fuel/software issue and advised trial with premium fuel; another owner received verbal safety assurance but no permanent fix.
Engine compartment fire
Two incidents of engine compartment fire while vehicle parked or during low-speed driving. One fire at 90,000 miles with unknown cause (investigation pending); another at 50,200 miles with smoke and foul odor preceding fire, resulting in smoke inhalation injury. Vehicles destroyed in both cases.
When: 50,200 miles; 90,000 miles
Symptoms owners cite: Smoke and foul odor in cabin (fire incident); Engine compartment fire
Repairs/costs cited: Vehicles destroyed; no repair attempted or completed.
Recalls/TSBs owners mention: Manufacturer acknowledged failures and stated investigation would determine further assistance; no resolution reported in narratives.
Acceleration hesitation and jerky acceleration
Vehicle hesitates for several seconds when accelerating from stop or on highway, then jerks forward suddenly or enters limp mode. Occurs at low and high speeds, creating safety hazard when merging or passing. Persistent even after sensor/spark plug replacement in some cases. Dealership diagnostics often inconclusive or blamed on fuel/software.
When: Across broad mileage range; reported at 40k–110k+ miles
Symptoms owners cite: Hesitation when accelerating from stop or highway merge; Jerky or sudden acceleration after hesitation; Check engine light (sometimes intermittent); Limp mode activation; Multiple dealer visits without resolution
Codes mentioned: P0340, Timing-related codes (unspecified)
Repairs/costs cited: Multiple diagnostics conducted; camshaft sensors replaced in one case ($unknown), timing chain replacement recommended in others. No standardized repair identified across narratives.
Recalls/TSBs owners mention: Dealership claimed acceleration hesitation normal for turbocharged engine (turbo lag) in one case; others refused to diagnose root cause or claimed vehicle met Mercedes specification.
Radiator component rupture and coolant system clog
Radiator component bursts internally, causing heater and engine parts to clog. Mercedes issued technical bulletin acknowledging the issue as 'rare' but not subject to recall due to low frequency. Owner reported radiator failure within two weeks of routine A-service, despite service report claiming fluid inspection was performed.
When: Shortly after routine service (1–2 weeks post-service)
Symptoms owners cite: Loss of heat in heating system; Coolant leak (internal/hard to detect); Engine part clog
Repairs/costs cited: Repair quote $3,000; owner purchased vehicle only 5 months prior.
Recalls/TSBs owners mention: Mercedes issued technical bulletin labeling issue 'rare' and ineligible for recall due to low reported frequency. No proactive customer notification mentioned.
Rough idle and cold-start rattle
Engine idles roughly and produces loud rattling or grinding noise, particularly on cold start, lasting 3–5 seconds. Occurs at stationary idle (1500 rpm) or during startup. Typically accompanied by check engine light or multiple fault codes. Often misattributed initially to fuel quality or normal operation.
When: Starting at 40,000–70,000 miles
Symptoms owners cite: Loud rattle or grinding at cold start (3–5 seconds); Rough idle at 1500 rpm; Check engine light; Diesel-like engine noise
Codes mentioned: P034062, P0340
Repairs/costs cited: Camshaft adjuster and related component replacement; $4,500 cited for parts and labor.
Recalls/TSBs owners mention: No proactive recall; owners discover issue via online research or dealer diagnostic.
Synthesized from 40 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 0 most recent
Common questions
How serious is the engine problem on the 2013 Mercedes-Benz C-Class?
It's a documented issue but not catastrophic. 40 complaints have been filed. Repairs average $3,100 and most owners catch it before it causes a breakdown.
At what mileage does the engine typically fail?
Across the 27 complaints that reported odometer mileage, most engine failures cluster between 57,800 and 92,000 miles, with the median around 76,000. A quarter of owners report trouble before 57,800; a quarter make it past 92,000. Maintenance history matters more than the odometer alone — this is the reported failure window, not a guarantee.
What does it cost to fix?
Independent shops typically charge around $3,100 for engine repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to engine?
No active recalls currently cover engine issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.