Dual mass flywheel replacement & repair
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£499.29
Average quote for a dual mass flywheel replacement or repair
Every car is fitted with some kind of flywheel - a heavy wheel that stores energy and smooths power delivery from the crankshaft. Diesel and high-torque petrol engines often have a dual-mass flywheel (DMF) rather than a single one. You can learn more about car flywheels here.
The purpose of a DMF is to make the process of starting the engine, changing gears and idling a lot smoother. It features two flywheels that rotate independently. One is attached to the clutch, the other to the engine, and a series of springs sits between them to minimise vibrations, preventing them from reaching the gearbox.
DMFs are hard-wearing and can last more than 100,000 miles. However, sometimes they wear out much earlier, at around 20,000 miles. The distance you get depends on the part's quality and how you drive.
Clutch replacement
The average price of a clutch repair on FixMyCar is £454.
If a clutch is slipping or making an unusual noise, it needs to be replaced to avoid further damage to the engine.
Can include- Diagnosis
- Replacement clutch
- May include flywheel replacement
Gearbox repair
The average cost of a gearbox repair booked on FixMyCar is £381.75. A gearbox is used to change the speed of a car. It's essential to get gearbox issues diagnosed as soon as possible.
Can include- Diagnosis
- Gearbox repair
- Gearbox replacement
Diagnostic test
The average price of a car diagnostic test on FixMyCar is £51.66.
A car diagnostic test is a digital analysis of your car, undertaken by a specialist mechanic, to assess potential faults and issues with your car engine, transmission, brakes and many more.
Can include- Diagnostic test
Signs of a bad dual-mass flywheel
When your dual-mass flywheel is faulty or worn, you may notice increased vibrations, mainly through the clutch pedal, and a rattling noise that disappears when you depress the pedal.
The process of replacing a DMF is similar to replacing a clutch, although the parts are more expensive. Often, DMFs last long enough that by the time they break, the cost of repairing them is more than the car is worth.
Mechanics sometimes recommend replacing both simultaneously since it’s easier to access the flywheel during a clutch replacement, and removing the clutch assembly is already time-consuming.
This guide discusses how much it costs to replace a clutch.
| Clutch Replacement | Get quote |
| Mobile Clutch Replacement | Get quote |
| Clutch Cable | Get quote |
| Dual Clutch Transmission | Get quote |
| Dual Mass Flywheel | Get quote |
| Slipping Clutch | Get quote |
| Worn Clutch | Get quote |
Learn more about clutches
What is the advantage of a dual-mass flywheel?
Dual mass flywheels are better at dampening noise and vibrations, so you’ll likely have a much smoother ride. However, they are also much heavier (which may hinder the performance of some higher-powered vehicles) and more complicated, making them expensive to replace.
Can you repair a dual-mass flywheel?
Repairing a single flywheel is usually possible; the same can’t be said for a DMF. You should never have a dual-mass flywheel resurfaced. Instead, you must either replace it or switch to a single flywheel.
Discussing your options with a mechanic who will advise you about the best and most affordable solution based on your situation is a good idea.
What causes a dual-mass flywheel to wear out?
The most common cause of a worn dual-mass flywheel is excessive heat, usually generated by a slipping clutch. When the flywheel gets too hot, it can crack and warp, eventually leading to total failure of the part.
Your driving style can also impact the lifespan of a DMF. Lots of stop-start driving - when in heavy traffic, for example - and allowing the engine to labour in high gears puts additional strain on the flywheel because it works harder when idling and setting off.
