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B58 engine mounts (G-series): what owners actually paid
B58 (3.0L turbo 6-cyl), G20/G30/G05/G01
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Fair-price range (from sourced prices)
How this is derived: the middle 50% (25th–75th percentile) of the USD prices in the table below for that shop type, using full-job totals only. Labor-only, customer-supplied-parts, warranty cost-share, bundled-extra-work and non-USD prices are shown but excluded. A range is only published with at least 3 usable prices. Scope differs between quotes, so read the notes.
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Graded against the dealer estimate range and independent sourced range.
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G20 M340i xDrive
G30 540i RWD
G30 540i xDrive
G05 X5 xDrive40i
G01 X3 M40i
Estimates, not quotes. Tax, shop fees and diagnosis aren't included, and the price you're quoted can differ. How we estimate
Symptoms
- Vibration at idle in Drive, especially at stoplights
- Clunk on take-off, shifting or lifting off the throttle
- Mount visibly sagging or leaking hydraulic fluid
- Vibration felt in the steering wheel or seat when the engine restarts after auto start/stop
Which cars are affected
G20 M340i / M340i xDrive, G30 540i / 540i xDrive, G05 X5 xDrive40i, G01 X3 M40i (also related G22/G26 M440i, G02 X4 M40i, G06/G07 40i). Part numbers differ between RWD and xDrive.
G20 · 3 Series 2019–presentG30 · 5 Series 2017–2023G05 · X5 2019–presentG01 · X3 2018–2024
Both side mounts are normally replaced together. The B58 mounts are fluid-filled; owners often link early failures to frequent auto start/stop. Mounts may or may not be covered under the new-car warranty (owner reports differ), so ask if you're under 4 yr/50k.
Sourced price points (6)
| Price | Shop | Vehicle / scope | Location | Year | Source |
|---|---|---|---|---|---|
| $2,950 | Dealer quote |
2020 M340i Both engine mounts (found during starter recall visit) |
— | ~2026 | r/M340i |
| $3,600 | Independent quote |
2020 M340i Both engine mounts, local euro shop |
— | ~2026 | r/M340i |
| $1,550 | Independent quote |
2020 M340i Both engine mounts, Bilstein (aftermarket) mounts |
— | ~2026 | r/M340i |
| $1,400 | Independent quote |
2020 M340i RWD Engine mounts, local performance shop |
— | ~2026 | r/M340i |
| $2,100 | Independent quote |
G20 330i (B48), 49k mi Engine mounts, independent euro shop · not used in range: different engine (context) |
Texas | ~2024 | Bimmerpost G20 |
| $1,789 | Dealer quote |
G20 (model not stated), 90k mi Both lower engine mounts, leaking · not used in range: model/engine not stated |
— | ~2023 | Bimmerpost G20 |
Greyed rows are shown for context and excluded from the range. Years are approximate (date of the post).
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B58 valve cover / PCV failure
B58; one B46/B48 point included and labeledIndie est. $1,248–$2,352Dealer est. $3,128–$5,052
B58 oil pump replacement
B58, mainly 2019–2020 buildsIndie est. $1,983–$3,612Dealer est. $3,978–$7,757
B58 water pump (coolant pump)
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Before you pay: check your VIN for recalls
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