Vehicle price comparison
Mercedes S Class vs Infiniti QX50 Throttle Body 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 throttle body cost more?
A used Mercedes S Class throttle body carries a median asking price of $120, which is 20% higher than the Infiniti QX50 at $100. Supply also plays a role: Mercedes S Class has 2,707 priced listings versus 393 for Infiniti QX50, and more listings generally mean more choices and more competitive pricing.
Grade A (excellent condition) parts make up 84% of Mercedes S Class listings compared to 65% for the Infiniti QX50, so buyers looking for top-condition units will find more options on the Mercedes S Class side.
The Mercedes S Class average ($147) runs 23% above its median ($120), 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 Infiniti QX50 (2015–2024) but only 8 for the Mercedes S Class (2015–2022), so the Infiniti QX50 data reflects a broader range of generations.
At Grade A (excellent) condition, the Infiniti QX50 is 33% cheaper ($91 vs $135) — the gap widens compared to the overall median difference.
Buyer's checklist
What to check before buying a used throttle body
- Distinguish between electronic drive-by-wire throttle bodies and traditional cable-actuated units with Idle Air Control (IAC) valves.
- Check bore diameter and butterfly valve throat for heavy carbon build-up, shaft play, or scoring along the aluminum bore wall.
- Inspect electronic sensor housing cover and connector pins for moisture entry, cracks, or burnt circuit traces.
- Verify coolant heating bypass nipple locations and vacuum port configurations, which vary by vehicle region and emission spec.
Full price guide
Mercedes S Class Throttle Body
$39 – $493 · 2,707 listings
Full price guide
Infiniti QX50 Throttle Body
$40 – $282 · 393 listings
Common questions
Mercedes S Class vs Infiniti QX50 throttle body FAQ
Is a used Mercedes S Class throttle body cheaper than a Infiniti QX50?
Infiniti QX50 has the lower median by $20 (20%). The Infiniti QX50 throttle body ranges from $40 to $282 across 393 listings, while the Mercedes S Class ranges from $39 to $493 across 2,707 listings.
Can I use a Mercedes S Class throttle body in a Infiniti QX50?
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 2,707 priced Mercedes S Class listings and 393 priced Infiniti QX50 listings — 3,100 in total.
How does condition grade affect the price?
Part condition significantly impacts price. Grade A (Excellent): Mercedes S Class $135 vs Infiniti QX50 $91. Grade B (Good): Mercedes S Class $175 vs Infiniti QX50 $127. Grade C (Fair): Mercedes S Class $50 vs Infiniti QX50 $75. 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 throttle body has 5 trim variants and the Infiniti QX50 has 2. Variants differ by engine size, drivetrain, or part number — matching the right variant is critical for proper fitment.
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