What should I look for in a used Mazda 6 estate?
The older 2.0-litre diesel engine can suffer with lubrication problems, where fuel finds its way into the oil system. Keep an eye on the car's oil level and, if it starts to creep up, arrange for an oil change and examination.
The gearbox on diesel models can become stiff and reluctant to change, but dealers should be able to resolve this. Other issues include the air-con system leaking coolant, plus creaks and squeaks from the dashboard and centre console.