Vehicle price comparison
Mercedes E Class vs Audi A4 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 Mercedes E Class master cylinder cost more?
A used Mercedes E Class master cylinder carries a median asking price of $65, which is 27% higher than the Audi A4 at $51. Supply also plays a role: Mercedes E Class has 1,785 priced listings versus 438 for Audi A4, and more listings generally mean more choices and more competitive pricing.
The Mercedes E Class average ($87) runs 34% above its median ($65), 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 Audi A4 (2015–2024) but only 8 for the Mercedes E Class (2015–2022), so the Audi A4 data reflects a broader range of generations.
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 E Class Master Cylinder
$25 – $275 · 1,785 listings
Full price guide
Audi A4 Master Cylinder
$30 – $247 · 438 listings
Common questions
Mercedes E Class vs Audi A4 master cylinder FAQ
Is a used Mercedes E Class master cylinder cheaper than a Audi A4?
Audi A4 has the lower median by $14 (27%). The Audi A4 master cylinder ranges from $30 to $247 across 438 listings, while the Mercedes E Class ranges from $25 to $275 across 1,785 listings.
Can I use a Mercedes E Class master cylinder 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 1,785 priced Mercedes E Class listings and 438 priced Audi A4 listings — 2,223 in total.
How does condition grade affect the price?
Part condition significantly impacts price. Grade A (Excellent): Mercedes E Class $55 vs Audi A4 $51. Grade B (Good): Mercedes E Class $91 vs Audi A4 $99. 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 E Class master cylinder has 2 trim variants and the Audi A4 has 0. Variants differ by engine size, drivetrain, or part number — matching the right variant is critical for proper fitment.
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