Vehicle price comparison
Mercedes S Class vs Acura RDX Ignition Switch 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 ignition switch cost more?
A used Mercedes S Class ignition switch carries a median asking price of $100, which is 1% higher than the Acura RDX at $99. Supply also plays a role: Mercedes S Class has 2,031 priced listings versus 411 for Acura RDX, and more listings generally mean more choices and more competitive pricing.
The Mercedes S Class average ($130) runs 30% above its median ($100), 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 Acura RDX (2015–2025) but only 9 for the Mercedes S Class (2015–2023), so the Acura RDX data reflects a broader range of generations.
Buyer's checklist
What to check before buying a used ignition switch
- Determine if the unit includes the mechanical lock cylinder with matching keys, or if it is purely the electrical ignition switch contact block.
- Match key transponder chip frequency (Passlock, PATS, or RFID) and verify if anti-theft relearn or key programming tools will be required.
- Inspect wire harness pigtail connectors for burnt plastic or loose female spade terminals caused by ignition circuit overload.
- Verify key cylinder positions (Accessory, Off, Run, Start) turn smoothly without sticking, binding, or requiring key jiggling.
Full price guide
Mercedes S Class Ignition Switch
$35 – $384 · 2,031 listings
Full price guide
Acura RDX Ignition Switch
$46 – $181 · 411 listings
Common questions
Mercedes S Class vs Acura RDX ignition switch FAQ
Is a used Mercedes S Class ignition switch cheaper than a Acura RDX?
Acura RDX has the lower median by $1 (1%). The Acura RDX ignition switch ranges from $46 to $181 across 411 listings, while the Mercedes S Class ranges from $35 to $384 across 2,031 listings.
Can I use a Mercedes S Class ignition switch in a Acura RDX?
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 2,031 priced Mercedes S Class listings and 411 priced Acura RDX listings — 2,442 in total.
How does condition grade affect the price?
Part condition significantly impacts price. Grade A (Excellent): Mercedes S Class $100 vs Acura RDX $99. Grade B (Good): Mercedes S Class $119 vs Acura RDX $99. Grade A parts are in excellent condition, B is good, and C is fair — always confirm grading criteria with the seller.
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