EGR valve sticking and soot blockage
Engine warning light, flat acceleration, uneven idle, smoke, or sudden loss of power.
How to check
Drive from cold and then accelerate gently and firmly through the mid-range once warm.
Estimated Repair Cost
£450
Explore common problems, estimated repair costs and practical checks for the 2016 Ford Grand C-MAX 2.0 Diesel Manual. Use this guide to help assess a used car, then unlock a personalised report for the exact vehicle you're considering.
Engine warning light, flat acceleration, uneven idle, smoke, or sudden loss of power.
Drive from cold and then accelerate gently and firmly through the mid-range once warm.
£450
Diesel smell, dampness around injectors, chuffing noise from the top of the engine, harder starting, or uneven running.
Start from cold, let it idle with the bonnet open if allowed, then drive and stop again after warming through.
£650
A steady hum or rumble that gets louder with speed and may change slightly when cornering.
Drive at 30 to 60 mph on a smooth road and make gentle left-right steering inputs within the lane.
£260

It can be, but only if the individual car backs it up. For the 2016 Ford Grand C-MAX 2.0 Diesel Manual, treat model-level patterns as viewing priorities and let condition, history and inspection evidence decide.
The problem cards above list the model-level checks for this guide. Read them as priorities for inspection and paperwork review, not proof that every example will have those faults.
Look for evidence, not just assurances: MOT advisories, service history, repair invoices, warning lights, fluid leaks, tyre and brake condition, and how the car behaves on a proper test drive. And of course, look at your personalised Should I Buy This Car? report, outlining a full list of common issues in detail, a personalised road test, a plain-English explanation and a MotorIQ score.
The guide above gives you the model-level pattern. A personalised MotorIQ report checks the registration-specific record and turns it into an ownership view before you commit.
Or enter the vehicle manually