Mercedes C-Class Fuel Injector Replacement Cost

Replace clogged or leaking fuel injectors.

$960 – $2,880

Typical labor: 2 to 5 hours

Get Exact Estimate for My C-Class

Parts vs Labor

55% / 45%

Typical share of total cost

Labor Time

2 to 5 hours

At a typical shop

Difficulty

Advanced DIY

3 of 5 for the Mercedes C-Class

Estimate based on Mercedes C-Class parts and labor adjustments versus the national average. Your exact cost depends on year, trim, mileage, and shop. Get a free personalized AI estimate above.

Why Mercedes C-Class Owners See This Pricing

Mercedes parts pricing is among the highest of any mainstream luxury brand.

For reference, the national average for fuel injector replacement on a typical passenger vehicle is $600 to $1,800. The Mercedes C-Class runs about +60% versus that baseline.

Common Symptoms in the Mercedes C-Class

Misfires and check engine light

Strong fuel smell

Rough idle

Poor fuel economy

Engine starts hard

What It Is

Fuel injectors spray a precise amount of fuel into each cylinder. They can clog from poor-quality fuel or fail electrically over time.

Why It Matters

Bad injectors cause misfires that damage the catalytic converter and waste fuel.

How to Save Money on Mercedes C-Class Fuel Injector Replacement

Try a quality fuel system cleaner (Techron, Gumout Regane) for 2 or 3 tankfuls before replacing, often clears mild clogs
On a high-mileage car, replace all injectors at once, they age together

Often Done Together

Shops commonly pair fuel injector replacement with these jobs to save on overlapping labor:

Spark Plug Replacement

$160 – $640

Fuel Pump Replacement

$800 – $1,920

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Frequently Asked Questions

Will injector cleaner really help?

For mild buildup, yes. For a fully failed injector, no, only replacement works.