Vehicle price comparison
Mercedes C Class vs Audi A4 Engine prices
Saurabh Kumar
Co-Founder & CTO, Part Price Guide
Built the pricing pipeline that collects and normalizes used OEM part listings from salvage yards and online marketplaces across the US.
Ambika Sharma
Co-Founder & COO, Part Price Guide
12 years of project management and technical operations experience. Reviews price guides for sample size, fitment accuracy, and data freshness.
Price face-off
Median price comparison
Condition comparison
How does the price differ by part grade?
Market analysis
Why does the Mercedes C Class engine cost more?
A used Mercedes C Class engine carries a median asking price of $6,350, which is 157% higher than the Audi A4 at $2,475. Supply also plays a role: Mercedes C Class has 2,582 priced listings versus 812 for Audi A4, and more listings generally mean more choices and more competitive pricing.
Our guide covers 11 model years for the Mercedes C Class (2015–2025) but only 9 for the Audi A4 (2015–2023), so the Mercedes C Class data reflects a broader range of generations.
At Grade A (excellent) condition, the Audi A4 is 62% cheaper ($2,497 vs $6,525) — the gap widens compared to the overall median difference.
Buyer's checklist
What to check before buying a used engine
- Confirm the VIN-matched engine code — the same model can use different engines across trims and years.
- Ask for the mileage on the donor vehicle. Under 80K miles is ideal; over 120K usually needs a compression test.
- Look for signs of overheating: warped heads, milky oil on the dipstick or filler cap, and coolant residue around the head gaskets.
- Check whether accessories (alternator, A/C compressor, power steering pump) are included or if you need to swap yours over.
Full price guide
Mercedes C Class Engine
$1,240 – $23,303 · 2,582 listings
Full price guide
Audi A4 Engine
$900 – $5,835 · 812 listings
Common questions
Mercedes C Class vs Audi A4 engine FAQ
Is a used Mercedes C Class engine cheaper than a Audi A4?
Audi A4 has the lower median by $3,875 (157%). The Audi A4 engine ranges from $900 to $5,835 across 812 listings, while the Mercedes C Class ranges from $1,240 to $23,303 across 2,582 listings.
Can I use a Mercedes C Class engine in a Audi A4?
This comparison describes pricing, not interchangeability. Even when two parts share similar prices, they may require different engines, trims, electronics, or mounting points. Always match the seller's part number against your VIN before purchasing.
How many listings does this comparison cover?
This comparison draws from 2,582 priced Mercedes C Class listings and 812 priced Audi A4 listings — 3,394 in total.
How does condition grade affect the price?
Part condition significantly impacts price. Grade A (Excellent): Mercedes C Class $6,525 vs Audi A4 $2,497. Grade B (Good): Mercedes C Class $5,350 vs Audi A4 $2,300. Grade A parts are in excellent condition, B is good, and C is fair — always confirm grading criteria with the seller.
Are there different trim variants to choose from?
Yes. The Mercedes C Class engine has 2 trim variants and the Audi A4 has 2. Variants differ by engine size, drivetrain, or part number — matching the right variant is critical for proper fitment.
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