Vehicle price comparison
Honda Civic vs Infiniti Q50 Engine Computer 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 Infiniti Q50 engine computer cost more?
A used Infiniti Q50 engine computer carries a median asking price of $140, which is 21% higher than the Honda Civic at $111. Supply also plays a role: Honda Civic has 8,040 priced listings versus 650 for Infiniti Q50, and more listings generally mean more choices and more competitive pricing.
The Honda Civic average ($138) runs 24% above its median ($111), indicating a tail of high-priced listings — likely low-mileage or remanufactured units pulling the average up.
At Grade A (excellent) condition, the Honda Civic is 23% cheaper ($113 vs $146) — the gap narrows compared to the overall median difference.
Buyer's checklist
What to check before buying a used engine computer
- Match the hardware part number and catch code exactly, as internal board architecture varies even within the same vehicle year and engine family.
- Confirm security anti-theft (PATS, PASS-Key, or Immobilizer) pairing requirements, as used ECMs almost always require VIN programming before starting the vehicle.
- Inspect connector headers for bent pins, thermal discoloration, or green corrosion indicating water leakage through the wiring harness plug.
- Verify emission tier compatibility (Federal/EPA vs. California CARB standards) and transmission control integration (PCM vs standalone ECM/TCM).
Full price guide
Honda Civic Engine Computer
$39 – $465 · 8,040 listings
Full price guide
Infiniti Q50 Engine Computer
$37 – $500 · 650 listings
Common questions
Honda Civic vs Infiniti Q50 engine computer FAQ
Is a used Honda Civic engine computer cheaper than a Infiniti Q50?
Honda Civic has the lower median by $29 (21%). The Honda Civic engine computer ranges from $39 to $465 across 8,040 listings, while the Infiniti Q50 ranges from $37 to $500 across 650 listings.
Can I use a Honda Civic engine computer in a Infiniti Q50?
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 8,040 priced Honda Civic listings and 650 priced Infiniti Q50 listings — 8,690 in total.
How does condition grade affect the price?
Part condition significantly impacts price. Grade A (Excellent): Honda Civic $113 vs Infiniti Q50 $146. Grade B (Good): Honda Civic $125 vs Infiniti Q50 $136. Grade C (Fair): Honda Civic $73 vs Infiniti Q50 $151. 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 Honda Civic engine computer has 6 trim variants and the Infiniti Q50 has 2. Variants differ by engine size, drivetrain, or part number — matching the right variant is critical for proper fitment.
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