The Peugeot 508, produced between 2014 and 2018, stands out as a stylish and comfortable family saloon or estate, blending French elegance with practicality. Its modern design, spacious interior, and array of advanced features made it a strong contender in the mid-size executive car market, competing with rivals like the Ford Mondeo and Volkswagen Passat. Despite its appeal, this generation of the Peugeot 508 is not without its share of common problems.
In this comprehensive guide, we'll explore the most frequently reported issues with the 2014-2018 Peugeot 508, offering insights into what prospective buyers should look for and discussing the cost of ownership.
Introduction: A Blend of Style and Comfort
The Peugeot 508 was designed to appeal to those looking for a balance of style, performance, and comfort in a family sedan or estate. It was available with a variety of petrol and diesel engines, and in several trims, offering options for a wide range of drivers. Known for its refinement on long motorway journeys and well-built interior, the 508 gained popularity for its high levels of standard equipment and advanced safety features.
However, as these models age, several common problems have emerged that potential buyers and current owners need to be aware of to ensure trouble-free ownership.
Common Problems with the Peugeot 508 (2014-2018)
1. EGR Valve Issues (Diesel Models)
Many diesel versions of the Peugeot 508 are equipped with an Exhaust Gas Recirculation (EGR) valve, which is designed to reduce nitrogen oxide (NOx) emissions by recirculating some of the exhaust gases back into the engine. Unfortunately, this component is prone to carbon buildup, especially in cars that are mainly driven on short journeys or in stop-start traffic.
Symptoms of a faulty EGR valve include:
- Engine warning light appearing on the dashboard.
- Reduced engine power or limp mode activation.
- Rough idling or difficulty starting the engine.
If the EGR valve becomes clogged or fails completely, it may need to be cleaned or replaced, which can be an expensive repair if left unchecked. Regular long drives at higher speeds can help keep the EGR valve cleaner by allowing the engine to burn off deposits.
2. Timing Belt Tensioner Failure
The timing belt tensioner is a crucial component that keeps the timing belt properly tensioned and in alignment. On some Peugeot 508 models, particularly those with diesel engines, owners have reported premature failure of the tensioner, which can lead to timing belt failure.
Symptoms of a failing tensioner include:
- Rattling or whining noises from the engine bay, especially when the engine is first started.
- Misfiring or poor engine performance.
- Sudden engine failure, if the belt snaps.
A broken timing belt can cause severe engine damage, often requiring a costly rebuild or replacement of major engine components. It’s essential to follow the manufacturer’s recommended interval for timing belt replacement and inspect the tensioner regularly to avoid catastrophic engine failure.
3. DPF Blockages (Diesel Models)
Diesel models of the Peugeot 508 are fitted with a Diesel Particulate Filter (DPF), which helps reduce soot emissions. However, the DPF can become blocked over time, especially if the car is mostly driven in urban environments where the engine doesn’t reach the high temperatures required to burn off soot particles.
Signs of a blocked DPF include:
- DPF warning light on the dashboard.
- Loss of power, especially at higher speeds.
- Increased fuel consumption.
If the DPF becomes severely blocked, the car may enter limp mode to prevent further damage. Regular high-speed motorway driving can help keep the DPF clear by allowing regeneration to occur. In some cases, a forced DPF regeneration or even DPF replacement may be necessary, which can be expensive.
4. Peeling Door Handles and Interior Trim
Several owners have reported issues with peeling or fading door handles and interior trim on the Peugeot 508. The soft-touch materials used in the interior, while initially appealing, tend to wear down over time, particularly in high-contact areas like the door handles, gear knob, and steering wheel.
Though this is more of a cosmetic issue, it can detract from the car's overall appearance, especially in higher-spec models with premium interiors. Replacing these parts can be costly, and aftermarket solutions may not match the original materials.
5. Clutch and Flywheel Wear (Manual Models)
Manual transmission variants of the Peugeot 508 are prone to clutch and flywheel wear, particularly on higher-mileage cars. Owners have reported issues with dual-mass flywheel (DMF) failure, which can cause vibrations and jerky clutch engagement.
Symptoms of a worn clutch or flywheel include:
- Clutch slipping, where the engine revs increase without a corresponding rise in speed.
- Vibrations or shuddering when engaging the clutch.
- Difficulty shifting gears, especially into first or reverse.
Replacing the clutch and flywheel is an expensive job, so it’s essential to inspect these components carefully when buying a used model. If the clutch feels heavy or the engagement is rough, it could indicate impending failure.
6. Electrical Gremlins
Like many modern cars, the Peugeot 508 is packed with electronic features, from touchscreen infotainment systems to automatic lights and wipers. While these features add to the car's appeal, some owners have reported issues with electrical glitches, including:
- Infotainment system freezing or failing to respond.
- Bluetooth connectivity problems.
- Faulty parking sensors or reversing camera.
These problems are often intermittent and can be frustrating for owners. In some cases, a software update can resolve the issue, but in others, replacement parts may be necessary. It’s always worth checking that all the electronics function properly during a test drive.
7. Turbocharger Problems (Diesel Models)
Diesel versions of the Peugeot 508, particularly those with higher mileage, have been known to experience turbocharger issues. The turbocharger can become clogged with carbon deposits or suffer from bearing wear, leading to reduced performance or outright failure.
Symptoms of a failing turbocharger include:
- Whistling or whining noises from the engine.
- Loss of power, especially when accelerating.
- Excessive smoke from the exhaust, especially under hard acceleration.
Regular oil changes and the use of high-quality engine oil can help prolong the life of the turbocharger, but once it fails, it can be an expensive component to replace.
What to Look for When Buying a Peugeot 508 (2014-2018)
If you’re considering purchasing a used Peugeot 508 from this generation, it’s essential to be aware of the potential issues and conduct a thorough inspection. Here’s what to keep in mind:
- Service History: Ensure that the car has a complete service history, particularly for timing belt changes on diesel models and DPF maintenance. A well-maintained car is less likely to experience major issues.
- Engine Performance: During a test drive, pay close attention to how the engine performs. Any signs of hesitation, rough idling, or turbo lag could indicate issues with the EGR valve, DPF, or turbocharger.
- Suspension Condition: Check for any clunking noises from the suspension, particularly when driving over bumps, as this could indicate worn suspension components.
- Clutch Feel: On manual models, ensure that the clutch feels smooth and doesn’t slip. A heavy or sticky clutch could indicate wear.
- Check for Electrical Issues: Test all of the car’s electronic features, including the infotainment system, parking sensors, and Bluetooth, to ensure they are functioning correctly.
How Expensive is It to Own a Peugeot 508 (2014-2018)?
While the Peugeot 508 is relatively affordable to buy on the used market, ownership costs can vary depending on the model and condition. Here are some factors to consider:
- Fuel Efficiency: Diesel models tend to be more fuel-efficient, particularly on long journeys. However, the cost of maintaining the DPF and EGR system can offset these savings if not properly maintained.
- Insurance: Insurance premiums for the Peugeot 508 are generally moderate, though they may vary depending on the engine size and trim level.
- Maintenance and Repairs: Routine maintenance costs are in line with other cars in its class, but repairs related to the timing belt, turbocharger, or clutch can be expensive. It’s important to budget for these potential issues, especially if buying a higher-mileage model.
- Depreciation: The Peugeot 508 has already experienced significant depreciation, which makes it an affordable used car purchase. However, it may not hold its value well compared to German rivals like the BMW 3 Series or Audi A4.
Conclusion
The 2014-2018 Peugeot 508 is an attractive, well-rounded car that offers comfort, style, and decent performance, especially for long-distance driving. However, prospective buyers should be aware of the common problems associated with this generation, including EGR valve issues, DPF blockages, and clutch wear in manual models.
If you’re considering purchasing a used Peugeot 508, make sure to check its service history, inspect the engine and transmission for signs of wear, and ensure that all electrical systems are functioning properly. With proper care and maintenance, the Peugeot 508 can provide a comfortable and reliable driving experience without breaking the bank.