2000 Peugeot 406
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Common Problems & Reliability
The 2000 Peugeot 406 has 3 known issues. 1 of these are classified as serious faults that could be expensive to repair. 1 are moderate concerns worth inspecting before purchase.
HDi Dual Mass Flywheel and Clutch Wear
SeriousThe 2.0 HDi 110 and 2.2 HDi models utilize a dual mass flywheel (DMF) to dampen diesel crankshaft torsional vibrations. Over higher mileages, the internal springs and friction damper mechanisms within the flywheel fatigue and break down. This results in heavy driveline shudder, metallic chattering at idle, clutch slip in higher gears under torque, and in severe cases, catastrophic flywheel separation that punches through the gearbox bellhousing.
Symptoms: Metallic rattling or chirping noise from bellhousing area at idle, Noise changes or disappears when clutch pedal is depressed to the floor...
Est. repair cost: £600–£1,100
Rear Multi-Link Suspension Passive Steer Bush Wear
ModerateThe 406 features an advanced multi-link rear suspension design with trailing arms, transverse links, and passive rear-steering tie rods. After years on potholed UK roads, the rubber bonded bushes on the rear transverse track control arms and passive steer links perish and develop significant play. This causes vague rear-end handling, wandering or twitchiness on motorways, severe scrubbing of the rear tyres, and recurring MOT failures.
Symptoms: Rear end feels floaty or wandering when changing lanes at motorway speeds, Loud knocking or clattering from rear axle when crossing road manhole covers...
Est. repair cost: £150–£400
COM2000 Indicator and Stalk Switch Cluster Failure
MinorOn Phase 2 models equipped with the multiplexed digital architecture, the steering column switch cluster (COM2000 unit) integrates the indicator, lighting, and wiper stalks into a single electronic module. The internal plastic detent springs and ribbon cables wear out over time. Common symptoms include an indicator stalk that drops under gravity and indicates left after completing a right turn, headlights switching on and off unprompted, or the horn failing to sound.
Symptoms: Indicator stalk feels loose and indicates opposite direction when self-cancelling, Headlights flicker or turn on automatically during daytime driving...
Est. repair cost: £180–£380
Buying Tips for the 2000 Peugeot 406
- Listen for metallic rattling or chatter at idle on HDi diesels that changes tone when pressing the clutch pedal, signaling dual mass flywheel failure
- Check rear suspension multi-link bushes and passive rear-steer tie-rods on a test drive; rear-end wandering or tyre scrubbing indicates worn bushes
- Verify indicator and wiper stalk operation on 1999–2004 multiplexed models; loose or floppy COM2000 stalks indicate worn internal detent switches
- Confirm timing belt replacement intervals on 2.0 HDi and 2.0 16v petrol engines; belts must be replaced every 40,000 to 60,000 miles to prevent engine destruction
- Inspect the rear brake lines and fuel tank support straps for heavy corrosion, which are frequent reasons for UK MOT failures on older examples
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