What is the Coolant Loss (B58 & B47 Engines) problem on a 2023 BMW X3 (G01)?

Common Problems with the
2023–2024 BMW X3 (G01)

We've identified 1 known issue that can affect the 2023–2024 BMW X3 (G01). None are considered critical, but they're worth knowing about before you buy.

Known Issues

Serious

Moderate

Minor

The 2023–2024 period has an average number of reported issues compared to other BMW X3 (G01) year periods.

All Known Issues

Coolant Loss (B58 & B47 Engines)

ModerateCooling System

Slow coolant loss from the water pump, expansion tank, or oil filter housing is common. It rarely causes a sudden breakdown but needs regular monitoring.

Most affected: 20d, M40i

Estimated cost: £200–£600Affects: 2017–2024Often appears around: 25,000–60,000 miles

Typical symptoms

•Intermittent low coolant warning
•Sweet smell from the engine bay
•Dried residue on the front of the engine or undertray

What to inspect before you buy

✓Check the expansion tank for hairline cracks near the neck
✓Inspect the water pump area for weeping
✓Look at the intake manifold for recall-related soot (diesels)

Buying Tips for the 2023 BMW X3 (G01)

✓Check for active grille shutter faults, which are a common nuisance on UK G-series cars
✓Inspect the expansion tank and water pump for signs of slow coolant leaks, especially on M40i models
✓Test for wind noise around the mirrors; cars with acoustic glass (option code 3KA) are much quieter
✓Verify that all ADAS features and cameras are functional, as sensor calibration is expensive if a bumper has been knocked

2022 BMW X3 (G01)