2016 — 2018
3.0L B58 - 340i
Petrol
While driving at low speeds, gently apply the brakes and listen for any clicking or vibration, as the M-Sport brakes on the 340i can develop uneven pad wear if not serviced regularly.
Check this by idling in 'Sport' mode; listen for any erratic idle or vibrations which may hint at the early stages of PCV diaphragm wear, a common quirk on the B58 engine.
While the car is stationary, turn the steering wheel lock-to-lock to ensure there is no creaking or resistance, as the steering rack mounts can sometimes settle over time.
Accelerate moderately on a straight road and ensure the ZF 8-speed transmission shifts smoothly; any hesitation in shifts might suggest that the transmission fluid, which is often considered a 'sealed for life' unit, may eventually benefit from a service.
Usually the time to evaluate the condition of cooling system components, specifically checking for any signs of seepage around the water pump.
A common point to refresh spark plugs and ignition coils to maintain the smooth power delivery the B58 is known for.
Recommended interval to inspect the condition of suspension bushings and engine mounts to preserve the car's dynamic handling.
Ensure the service history shows regular oil changes every 10,000km or 12 months, rather than relying solely on the extended factory interval.
Confirm the coolant levels are stable, as consistent drops could indicate the early stages of housing seal degradation.
Verify that the iDrive system has been updated, as this helps with connectivity and general vehicle health monitoring.
Look for receipts showing that the cabin air filter and microfilters have been replaced, which keeps the interior smelling fresh.
Check for any signs of uneven tyre wear, which is a good indicator of the vehicle's alignment history.
Estimated repair costs if issues arise
In cars of this age, it's common to consider that these components may eventually require replacement to maintain optimal engine temperatures. If this component needs attention in the future, it involves replacing the electric pump and housing.
Depending on the car's driving history, you might eventually need to budget for a more robust aluminium charge pipe to replace the factory plastic one, which can become brittle over time.
While the ZF gearbox is very reliable, keeping it in peak condition may eventually involve a filter and fluid change, which helps maintain smooth shifting characteristics.
Noticed something inaccurate or missing?Suggest an edit→
Disclaimer: This report is generated with the assistance of AI analysis based on verified automotive data. While we strive for 100% accuracy, enthusiasts should always conduct physical inspections and consult service records. View Full Disclaimer