Peugeot 408 I 1.6L THP
Model overview
A practical compact sedan with straightforward fundamentals, but age, climate, servicing and market-specific equipment are important to its ownership experience.
Pros
- Useful sedan practicality.
- Conventional front-wheel-drive layout.
- Petrol and diesel choices.
Cons
- Age-related chassis and electrical wear.
- Diesel maintenance is application-specific.
- Equipment varies by market and trim.
Common problems & ownership concerns
Potential impact: Low · Medium · High. This describes possible consequences, not fault likelihood.
- Body corrosion and ageing sealsMedium
- Suspension and steering wearMedium
- Electrical and cabin-equipment faultsMedium
Maintenance
Follow the VIN-specific handbook and engine service documentation, with particular care over the exact diesel specification.
Engine overview · 1.6L 4-cyl PETROL
The 408 I group combines a simpler naturally aspirated 1.6-litre petrol engine with a more complex turbocharged THP version, so condition and documented servicing matter particularly for the THP.
Pros
- Straightforward naturally aspirated option
- Useful everyday petrol engine size
Cons
- THP version has greater turbo and direct-injection complexity
- Engine group covers different mechanical systems
- Service history strongly affects ownership confidence
Common problems & ownership concerns
Potential impact: Low · Medium · High. This describes possible consequences, not fault likelihood.
- THP turbocharged timing-chain wearHigh
- THP turbocharged intake and boost-system issuesMedium
- THP oil leaks or oil-consumption concernsMedium
- Naturally aspirated 1.6-litre age-related ignition and sealing faultsMedium
Maintenance
Use the VIN-specific service schedule and correct oil specification; monitor the THP carefully and confirm timing-system guidance for its exact engine code.
These are general ownership concerns, not a diagnosis. Equipment and engine details vary by version and production date.
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