Vehicle price comparison
Mercedes S Class vs Buick Regal 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 200% higher than the Buick Regal at $50. Supply also plays a role: Mercedes S Class has 4,935 priced listings versus 306 for Buick Regal, 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 66% for the Buick Regal, so buyers looking for top-condition units will find more options on the Mercedes S Class side.
The Buick Regal average ($71) runs 42% above its median ($50), indicating a tail of high-priced listings — likely low-mileage or remanufactured units pulling the average up.
Our guide covers 10 model years for the Mercedes S Class (2015–2024) but only 6 for the Buick Regal (2015–2020), so the Mercedes S Class data reflects a broader range of generations.
Only 46% of Buick Regal water pump listings include a posted price (306 of 663 observed) — the rest are "call for price," which usually signals negotiable or higher-than-average pricing.
The Buick Regal water pump is interchangeable across 25 model years versus just 14 for the Mercedes S Class — that wider compatibility window means more donor vehicles in salvage yards and tends to push prices lower.
At Grade A (excellent) condition, the Buick Regal is 69% cheaper ($50 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
Buick Regal Water Pump
$19 – $229 · 306 listings
Common questions
Mercedes S Class vs Buick Regal water pump FAQ
Is a used Mercedes S Class water pump cheaper than a Buick Regal?
Buick Regal has the lower median by $100 (200%). The Buick Regal water pump ranges from $19 to $229 across 306 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 Buick Regal?
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 306 priced Buick Regal listings — 5,241 in total.
How does condition grade affect the price?
Part condition significantly impacts price. Grade A (Excellent): Mercedes S Class $161 vs Buick Regal $50. Grade B (Good): Mercedes S Class $205 vs Buick Regal $75. Grade C (Fair): Mercedes S Class $85 vs Buick Regal $50. 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 S Class water pump has 1 trim variant and the Buick Regal has 3. Variants differ by engine size, drivetrain, or part number — matching the right variant is critical for proper fitment.
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