B58 Coolant Loss / PCV
ModerateEngineThe 3.0 M40i models can suffer from minor coolant loss and PCV valve membrane tearing.
Estimated cost: £150–£500Affects: 2018–2024
Reliability GuideCommon Problems with the
Common Problems with the
2023–2024 BMW Z4 (G29)
We've identified 1 known issue that can affect the 2023–2024 BMW Z4 (G29). None are considered critical, but they're worth knowing about before you buy.
1
Known Issues
0
Serious
1
Moderate
0
Minor
The 2023–2024 period has an average number of reported issues compared to other BMW Z4 (G29) year periods.
All Known Issues
Buying Tips for the 2023 BMW Z4 (G29)
- ✓Check the fabric soft-top for any wear marks or creases, and ensure it opens/closes silently in the claimed 10 seconds.
- ✓Inspect the B48/B58 engine water pump and thermostat area for slow coolant leaks, a common minor issue on modern BMWs.
- ✓Test the iDrive 7 digital instrument cluster to ensure it doesn't freeze or lag, verifying the car has the latest OTA software updates.
- ✓Verify the condition of the large alloy wheels, as the low stance makes them very susceptible to kerbing.
- ✓Ensure the active exhaust valves (if fitted) open and close correctly when switching between Comfort and Sport modes; they can seize with carbon buildup.
- ✓Check the interior trim for squeaks, particularly around the rear bulkhead where the roof mechanism meets the cabin.
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