Vehicle price comparison
Mercedes S Class vs Audi Q3 Heater Core 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 heater core cost more?
A used Mercedes S Class heater core carries a median asking price of $116, which is 25% higher than the Audi Q3 at $93. Supply also plays a role: Mercedes S Class has 1,069 priced listings versus 405 for Audi Q3, and more listings generally mean more choices and more competitive pricing.
The Mercedes S Class average ($227) runs 96% above its median ($116), indicating a tail of high-priced listings — likely low-mileage or remanufactured units pulling the average up.
Our guide covers 11 model years for the Audi Q3 (2015–2025) but only 8 for the Mercedes S Class (2015–2023), so the Audi Q3 data reflects a broader range of generations.
The Mercedes S Class heater core is interchangeable across 15 model years versus just 11 for the Audi Q3 — that wider compatibility window means more donor vehicles in salvage yards and tends to push prices lower.
At Grade A (excellent) condition, the Audi Q3 is 20% cheaper ($93 vs $116) — the gap narrows compared to the overall median difference.
Buyer's checklist
What to check before buying a used heater core
- Pressure test the core before installation to check for pinhole leaks, as dashboard removal labor makes installing a leaking used core costly.
- Inspect inlet and outlet aluminum tubes for crimping, bending, or galvanic corrosion where hoses clamp on.
- Look into the tube openings for white mineral deposits or rust scale, which indicate neglected cooling systems and clogged internal passages.
- Verify tube routing angles and quick-disconnect collar designs to ensure proper clearance through the firewall box.
Full price guide
Mercedes S Class Heater Core
$60 – $540 · 1,069 listings
Full price guide
Audi Q3 Heater Core
$65 – $127 · 405 listings
Common questions
Mercedes S Class vs Audi Q3 heater core FAQ
Is a used Mercedes S Class heater core cheaper than a Audi Q3?
Audi Q3 has the lower median by $23 (25%). The Audi Q3 heater core ranges from $65 to $127 across 405 listings, while the Mercedes S Class ranges from $60 to $540 across 1,069 listings.
Can I use a Mercedes S Class heater core in a Audi Q3?
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 1,069 priced Mercedes S Class listings and 405 priced Audi Q3 listings — 1,474 in total.
How does condition grade affect the price?
Part condition significantly impacts price. Grade A (Excellent): Mercedes S Class $116 vs Audi Q3 $93. Grade B (Good): Mercedes S Class $116 vs Audi Q3 $93. Grade C (Fair): Mercedes S Class $300 vs Audi Q3 $95. 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 heater core has 2 trim variants and the Audi Q3 has 2. Variants differ by engine size, drivetrain, or part number — matching the right variant is critical for proper fitment.
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