Vehicle price comparison
Kia Optima vs Mazda 3 Door Assembly prices
Price face-off
Median price comparison
Market analysis
Why does the Mazda 3 door assembly cost more?
A used Mazda 3 door assembly carries a median asking price of $830, which is 70% higher than the Kia Optima at $250. Supply also plays a role: Kia Optima has 1,082 priced listings versus 115 for Mazda 3, and more listings generally mean more choices and more competitive pricing.
The Kia Optima has 16 known trim variants compared to 4 for the Mazda 3, which means buyers need to be more careful about matching the exact engine or drivetrain configuration on the Kia Optima.
Buyer's checklist
What to check before buying a used front door assembly
- Verify door shell dimensions, body line pressings, and trim moldings, especially when comparing 2-door, 4-door, crew cab, and extended cab body variants.
- Check internal electrical harness connectors, verifying power mirror options (heating, turn signals, blind spot indicators), speaker wiring, and door lock modules.
- Inspect bottom drain holes and lower inner hem flanges for bubbling paint or structural rust common in wet climates.
- Confirm whether the assembly includes glass, window regulator, latch mechanism, exterior handle, and interior panel or if it is a bare door shell.
Full price guide
Kia Optima Door Assembly
$50 – $750 · 1,082 listings
Full price guide
Mazda 3 Door Assembly
$50 – $1,192 · 115 listings
Common questions
Kia Optima vs Mazda 3 door assembly FAQ
Is a used Kia Optima door assembly cheaper than a Mazda 3?
Kia Optima has the lower median by $580 (70%). The Kia Optima door assembly ranges from $50 to $750 across 1,082 listings, while the Mazda 3 ranges from $50 to $1,192 across 115 listings.
Can I use a Kia Optima door assembly in a Mazda 3?
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 1,082 priced Kia Optima listings and 115 priced Mazda 3 listings — 1,197 in total.
Are there different trim variants to choose from?
Yes. The Kia Optima door assembly has 16 trim variants and the Mazda 3 has 4. Variants differ by engine size, drivetrain, or part number — matching the right variant is critical for proper fitment.
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