2018–2021 BMW Z4 (G29)
Browse our directory of 2018–2021 BMW Z4 (G29) vehicles. Access instant MOT history reports, tax status, and reliability insights for any registration listed below.
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Common Problems & Reliability
The 2018–2021 BMW Z4 (G29) has 3 known issues. 2 are moderate concerns worth inspecting before purchase.
Soft Top Wear Marks
ModerateSome owners report the soft top rubbing on its own frame when folded, causing shiny wear patches or premature tearing.
Est. repair cost: £0–£1,000
B58 Coolant Loss / PCV
ModerateThe 3.0 M40i models can suffer from minor coolant loss and PCV valve membrane tearing.
Est. repair cost: £150–£500
iDrive Reboots
MinorOccasional screen freezing and rebooting, typically fixed by over-the-air software updates.
Est. repair cost: £0
Buying Tips for the 2018–2021 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.
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