2009 — 2012
3.4L Flat-6 (228kW)
Petrol
While accelerating in a higher gear at low RPM, check for any 'stutter' or hesitations. This could be an early indication that the ignition coils or spark plugs are nearing the end of their service interval, which is a common occurrence on the M97 engine.
Check this by operating the convertible top mechanism several times while stationary. Ensure the roof operates smoothly without any struggling or unusual motor noises, as the microswitches and cables can occasionally require adjustment in older models.
Before starting the engine, look for any oil misting around the rear underside of the engine bay. While not always critical, keeping an eye on the rear main seal (RMS) area is a sensible practice for any flat-six owner to establish a baseline for their new vehicle.
While driving over uneven road surfaces, listen carefully for any clunks or rattles from the front and rear suspension arms. Suspension bushings and control arms in vehicles of this age can often start to show signs of wear, potentially affecting the precise handling these cars are known for.
Usually marks the time to consider refreshing the water pump and cooling system components to prevent future overheating.
A point where suspension dampers and strut mounts may start to lose their original firmness, impacting ride quality.
The typical interval for replacing the serpentine belt and inspecting pulleys for play.
Ensure the oil has been changed at least once annually, even if the mileage is low, to keep the engine internals clean.
Regularly clear the drainage holes near the roof mechanism and under the front bonnet to prevent water pooling and electrical gremlins.
Keep a close eye on the coolant expansion tank, as the plastic can become brittle over time and may eventually require a replacement.
Verify the brake fluid flush history, as this should be done every two years to maintain pedal feel and system longevity.
Check that all interior buttons and switches are functioning, as occasional use is actually better for the electronics than long periods of inactivity.
Estimated repair costs if issues arise
If this component needs attention in the future, it is often best to replace all six at once alongside the spark plugs. It’s a standard job, but depending on the car's history, you might eventually need to budget for this to ensure smooth combustion.
If the ride feels a bit 'loose' or noisy over bumps, refreshing the front and rear control arms can transform the handling back to factory-fresh levels. It is a worthwhile investment for the driving experience.
Occasionally, the motors or drive cables that actuate the roof may require replacement or adjustment. It is a specialised task, so it is wise to set aside some funds just in case the roof becomes temperamental.
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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