Mercedes-Benz C 300
2017–2021 only
2017–2021 Mercedes-Benz C 300 models have 537 classified complaints on record for these years specifically, plus 35 recalls. The most common issue in this range is Internal engine (bearings, pistons, rings), typically surfacing around 50,500 miles.
Computed directly from stored federal records for 2017–2021 model years only — not blended with the rest of this vehicle's production run. See the full Mercedes-Benz C 300 report for every year combined.
Where this range fits
What breaks, and when — 2017–2021 only
Median onset: 50,500 miles.
Tends to show up later than this model's other issues. · More common in older model years.
Median onset: 15,500 miles. 19.6% of these reported an injury, a death, or a crash with fire.
Tends to show up earlier than this model's other issues. · More common in older model years.
Median onset: 41,700 miles. 3.9% of these reported an injury, a death, or a crash with fire.
More common in older model years. · Typical repair: $330–$620 nationally.
Median onset: 36,000 miles.
More common in newer model years.
Median onset: 28,000 miles.
More common in older model years.
Median onset: 2,000 miles. 6.7% of these reported an injury, a death, or a crash with fire.
Tends to show up earlier than this model's other issues. · More common in newer model years.
Median onset: 32,000 miles.
More common in older model years.
Median onset: 55,000 miles.
Tends to show up later than this model's other issues. · More common in newer model years.
From owner-filed complaints to NHTSA, not independently verified. Federal mileage reporting on recent complaints is sparse — see how it works. Cost ranges are national estimates from book labor hours and parts pricing, not this vehicle's actual repair history — they don't account for your location or shop type.
Cost estimator: what will this one cost you?
Enter the car's year and mileage. See which known problems are due in your next 3 years, what each costs at your state's labor rates, which ones to ask the seller about, and routine maintenance to budget for.
Sources: NHTSA Office of Defects Investigation — complaints and recalls, scoped to 2017–2021 model years. See the full Mercedes-Benz C 300 report for every year and full specs/safety data.