2018 BMW X3 car radio — amplifier, Harman Kardon audio system, 3.0L (M40i) price snapshot
- Low
- $50
- Average
- $466
- High
- $1,011

Year & trim-specific price guide
A used 2018 BMW X3 car radio (amplifier, Harman Kardon audio system, 3.0L (M40i)) costs $50 to $1,011, with a median asking price of $461. Based on 11 priced salvage yard listings across the US, updated Aug 27, 2026. Prices exclude shipping, core charges, and installation.
Condition comparison
| Grade | Price range | Relative range | Listings |
|---|---|---|---|
| Grade AClean / low wear | $50–$526 | 8 | |
| Grade BStandard used | $780–$1,011 | 3 | |
| Grade CVisible wear | Updating | — | |
| Grade XUngraded | Updating | — |
Median by grade
Median asking price by seller-reported condition grade · $50–$1,011 overall range
Trim-specific context
This pricing covers the amplifier, Harman Kardon audio system, 3.0L (M40i) variant of the 2018 BMW X3 car radio, based on 11 priced listings. Its $461 median is 155% above the 2018 BMW X3 car radio overall median of $181.
There are 5 other car radio variants available for the 2018 BMW X3.
Pricing is not a fitment guarantee. Match the VIN, part number, engine or drivetrain, and seller-listed variant before ordering.
Same year, other trims
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Common questions
Based on 11 priced salvage-yard listings, a used 2018 BMW X3 car radio in the amplifier, Harman Kardon audio system, 3.0L (M40i) variant lists between $50 and $1,011, with a median asking price of $461.
In our current dataset, the amplifier, Harman Kardon audio system, 3.0L (M40i) variant appears only for the 2018 model year.