Vehicle price comparison
Mercedes S Class vs Audi A6 Master Cylinder 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 Audi A6 master cylinder cost more?
A used Audi A6 master cylinder carries a median asking price of $99, which is 12% higher than the Mercedes S Class at $87. Supply also plays a role: Mercedes S Class has 1,219 priced listings versus 334 for Audi A6, and more listings generally mean more choices and more competitive pricing.
Only 65% of Mercedes S Class master cylinder listings include a posted price (1,219 of 1,881 observed) — the rest are "call for price," which usually signals negotiable or higher-than-average pricing.
Buyer's checklist
What to check before buying a used brake master cylinder
- Verify reservoir port style, fluid level sensor connector pin count, and brake line flare port sizes and locations (metric vs imperial threads).
- Check bore size specifications, as vehicles equipped with heavy-duty tow packages or larger brake calipers use larger diameter master cylinder bores.
- Inspect primary and secondary piston bore seals for internal bypass leaks, fluid weeping at the brake booster mounting flange, or dark sludge build-up.
- Confirm whether the unit is designed for vacuum-assisted, hydro-boost, or electro-hydraulic brake systems.
Full price guide
Mercedes S Class Master Cylinder
$45 – $175 · 1,219 listings
Full price guide
Audi A6 Master Cylinder
$40 – $232 · 334 listings
Common questions
Mercedes S Class vs Audi A6 master cylinder FAQ
Is a used Mercedes S Class master cylinder cheaper than a Audi A6?
Mercedes S Class has the lower median by $12 (12%). The Mercedes S Class master cylinder ranges from $45 to $175 across 1,219 listings, while the Audi A6 ranges from $40 to $232 across 334 listings.
Can I use a Mercedes S Class master cylinder in a Audi A6?
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 1,219 priced Mercedes S Class listings and 334 priced Audi A6 listings — 1,553 in total.
How does condition grade affect the price?
Part condition significantly impacts price. Grade A (Excellent): Mercedes S Class $99 vs Audi A6 $99. Grade B (Good): Mercedes S Class $100 vs Audi A6 $116. 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 master cylinder has 1 trim variant and the Audi A6 has 2. Variants differ by engine size, drivetrain, or part number — matching the right variant is critical for proper fitment.
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