Vehicle price comparison
Mercedes S Class vs Audi A4 Water Pump 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 S Class water pump cost more?
A used Mercedes S Class water pump carries a median asking price of $150, which is 100% higher than the Audi A4 at $75. Supply also plays a role: Mercedes S Class has 4,935 priced listings versus 289 for Audi A4, and more listings generally mean more choices and more competitive pricing.
Grade A (excellent condition) parts make up 89% of Mercedes S Class listings compared to 65% for the Audi A4, so buyers looking for top-condition units will find more options on the Mercedes S Class side.
At Grade A (excellent) condition, the Audi A4 is 63% cheaper ($60 vs $161) — the gap widens compared to the overall median difference.
Buyer's checklist
What to check before buying a used water pump
- Spin the pump pulley flange by hand to check for smooth bearing operation, grinding noise, or shaft play (a new pump is usually recommended due to low cost).
- Inspect the weep hole on the pump body for blue/green coolant residue, crusty mineral buildup, or active leakage signs.
- Check impeller vanes (plastic vs stamped steel vs cast iron) for corrosion, missing fins, or detachment from the shaft.
- Verify housing bolt patterns, thermostat housing integration, and belt pulley hub offset relative to engine accessory drives.
Full price guide
Mercedes S Class Water Pump
$25 – $546 · 4,935 listings
Full price guide
Audi A4 Water Pump
$25 – $188 · 289 listings
Common questions
Mercedes S Class vs Audi A4 water pump FAQ
Is a used Mercedes S Class water pump cheaper than a Audi A4?
Audi A4 has the lower median by $75 (100%). The Audi A4 water pump ranges from $25 to $188 across 289 listings, while the Mercedes S Class ranges from $25 to $546 across 4,935 listings.
Can I use a Mercedes S Class water pump 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 4,935 priced Mercedes S Class listings and 289 priced Audi A4 listings — 5,224 in total.
How does condition grade affect the price?
Part condition significantly impacts price. Grade A (Excellent): Mercedes S Class $161 vs Audi A4 $60. Grade B (Good): Mercedes S Class $205 vs Audi A4 $85. Grade C (Fair): Mercedes S Class $85 vs Audi A4 $100. Grade A parts are in excellent condition, B is good, and C is fair — always confirm grading criteria with the seller.
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