Peugeot 508: a balance of style and common technical concerns

The Peugeot 508 combines an attractive fastback design with modern technology and hybrid powertrains. However, owners and prospective buyers should be aware of regularly occurring technical issues that can affect the ownership experience and maintenance costs. From engine faults to electronic glitches and transmission problems: the 508 has its challenges. Read on to know exactly what you need to look out for.

The appeal of the 508: why do consumers choose it?

The Peugeot 508 stands out thanks to its sporty fastback silhouette and low roofline of 1,403–1,410 mm. The model has a length of 4,750 mm and a wheelbase of 2,800 mm. This creates a dynamic appearance that differs from traditional saloons. The interior exudes a premium feel, created by the distinctive i-Cockpit system (a specific interior and control concept by Peugeot featuring, among other things, a compact steering wheel and high-mounted instrument cluster), digital displays and high-quality materials.

The model is available with various powertrains: from the 1.2 PureTech petrol engine with 131 bhp to the Peugeot Sport Engineered (PSE) – the sport-tuned range-topping version – with Hybrid4 (a plug-in hybrid powertrain with four-wheel drive), 360 bhp and four-wheel drive. The plug-in hybrid variants offer an electric driving range of up to 40 miles, enabling emission-free commuting on a daily basis. The boot provides 487 litres of luggage space, expandable to 1,537 litres with the rear seats folded down. For car enthusiasts looking for an alternative to German premium brands, the 508 offers an interesting mix of style, technology and driving characteristics.

Still, not everything is rosy. Various owners report technical problems that can make ownership more difficult. If you are considering buying a 508, it is wise to inform yourself properly about car problems with Peugeot, so you know what to watch out for.

‘ These problems affect not only everyday driving enjoyment, but also the vehicle’s residual value. ’

Common categories of problems

The Peugeot 508 suffers from issues in several technical areas. Engine-related complaints are common, especially in specific generations of the PureTech and BlueHDi engines. The EAT8 (an 8-speed automatic transmission from Peugeot) also has its teething troubles.

Electronic faults form a second category. The infotainment system, sensors and driver assistance systems can show glitches that range from annoying to potentially dangerous. In addition, owners report problems with the suspension system, with the suspension and shock absorbers in particular wearing out faster than expected.

Minor irritations such as creaks in the interior and material defects complete the picture. These problems affect not only everyday driving enjoyment, but also the vehicle’s residual value.

Engine issues with petrol and diesel

The 1.2 PureTech petrol engine used in the 508 is known for problems with the timing belt. This belt runs in an oil bath environment and, in the event of insufficient maintenance or manufacturing defects, can suffer from premature wear. This can lead to severe engine damage.

Symptoms include:

Metallic noises from the engine bay
Loss of engine power
Rough or uneven running
Warning lights on the dashboard

Peugeot has issued a recall for some production years, but not all affected cars have been repaired. When buying a used 508 with a PureTech engine, always have it checked to see whether the timing belt has been replaced according to schedule and whether the recall has been carried out.

The BlueHDi diesel engines struggle with problems related to the particulate filter (DPF, or diesel particulate filter). With mainly shorter trips, the filter can become clogged. This results in loss of power and limp-home mode. The AdBlue dosing system (a fluid used for exhaust after-treatment in diesel engines) is also known to cause problems. The AdBlue injector can seize due to crystal formation, which again leads to faults. Make sure you regularly drive longer distances to allow the filter to regenerate and check the AdBlue system during service intervals.

Transmission and drivetrain issues

The EAT8 automatic gearbox used in many 508 variants shows jerky shifting behaviour in some cars. This is most noticeable at low speeds, when pulling away from a standstill or when cornering. Owners of plug-in hybrid versions report that the transition between electric drive and combustion engine can sometimes be abrupt.

Possible causes are either software-related or mechanical. For certain production years, Peugeot has released software updates aimed at improving shift quality. During a test drive, pay close attention to smooth gear changes in different driving conditions.

The manual gearboxes are less problematic, but some owners report a heavy shift action or rattling noises. This may indicate clutch wear or worn synchromesh rings (components that ensure smooth gear changes in a manual gearbox). At high mileage, clutch replacement is a normal maintenance item, but premature wear can occur with aggressive driving and shifting.

‘ Be aware that some problems are hardware-related and therefore cannot be solved with an update. ’

Electronic faults and software errors

The 508’s infotainment system regularly struggles with software errors. Owners report frozen screens, navigation dropping out and unresponsive touchscreens. The wireless smartphone charger also does not always work properly.

Common complaints are:

Screen that does not start up after starting the car
Bluetooth connection that frequently drops
Navigation system that gives incorrect routes
Radio that suddenly cuts out

Software updates via the dealer can resolve some of these issues. When buying, check whether the car has the latest software version. Be aware that some problems are hardware-related and therefore cannot be solved with an update.

Sensors for parking assistance and driver assistance systems can fail due to dirt, moisture or physical damage. The 180-degree reversing camera and blind spot monitoring are particularly sensitive to contamination. Clean the sensors regularly to prevent warning messages. If fault messages persist, the sensor may need to be replaced.

Chassis and steering considerations

The 508’s chassis suffers from problems with the front suspension. Bushes in the wishbones and anti-roll bar links can wear prematurely, resulting in creaking noises when steering or driving over bumps. This problem is more common in cars that are regularly driven on poor road surfaces.

In some cars, the shock absorbers show early signs of leakage. This results in a wallowy ride and reduced comfort. During service intervals, have the shocks checked for oil leaks and replace them if necessary.

The electric power steering generally performs well, but some owners report heavier steering at low speeds or loss of steering assistance. This may indicate a faulty steering angle sensor or problems with the electric power steering pump. Have this checked immediately, as it affects safety.

Brakes and safety systems

The 508’s braking system is generally reliable, but on plug-in hybrid variants the brake discs can corrode more quickly. Because of the frequent use of regenerative braking, the mechanical brakes are used less often, which promotes rust formation. This leads to reduced braking performance and juddering when braking.

For PHEV models (plug-in hybrid vehicles), make sure you brake firmly from time to time to keep the discs clean. If rust has formed, it may be necessary to replace the brake discs and pads. During service intervals, keep an eye on disc thickness and the condition of the brake pads.

The automatic emergency braking system can give false alarms or react too late. This is often due to dirty sensors or software errors. Keep the front of the car clean and have the system calibrated regularly. Never rely entirely on driver assistance systems; always stay alert.

‘ Causes include loose clips, worn rubber seals or insufficiently secured plastic trim panels. ’

Interior and bodywork annoyances

Although the 508’s interior has a premium look and feel, owners report creaks and rattles. These mainly come from the dashboard, centre console and door trims. Causes include loose clips, worn rubber seals or plastic trim panels that are not firmly secured.

The impact on maintenance and residual value

The Peugeot 508’s technical problems lead to higher maintenance costs. Timing belt replacement on PureTech engines, transmission issues and electronic faults result in higher garage bills. Owners should factor in additional maintenance costs on top of the regular service schedule.

The 508’s residual value is also affected. Used car buyers are aware of the well-known issues, which puts downward pressure on the sale price. Plug-in hybrid models depreciate more quickly due to concerns about battery life. The high replacement cost of the battery also plays a role. Diesel variants are suffering from falling demand due to emissions legislation and access restrictions in cities.

For those who still find the 508 appealing, a comprehensive service history and warranty cover are important. Consider an extended warranty for key components such as the engine and transmission.

Advice for owners and potential buyers

If you are considering buying a Peugeot 508, have a thorough pre-purchase inspection carried out by a specialist. Pay particular attention to the condition of the timing belt on PureTech engines, the shift quality of the automatic gearbox and the functioning of all electronic systems.

Ask for a complete service history and check whether any recalls have been carried out. Test all systems during the test drive: infotainment, climate control, driver assistance systems and, on hybrids, the transition between electric motor and combustion engine.

The following preventive tips apply to current owners:

Follow the maintenance schedule strictly and have servicing carried out by an authorised dealer or specialist
On PureTech engines: have the timing belt replaced preventively within the recommended intervals
Regularly drive longer distances to regenerate the particulate filter on diesel models
Keep sensors and cameras clean to ensure optimal performance of safety systems
Update the software for infotainment and driver assistance systems whenever the dealer offers this
On PHEV models: brake firmly from time to time to keep the brake discs clean

Carefully document all maintenance and repairs. This increases the residual value and gives future buyers confidence.

‘ With the right precautions, the 508 can be a satisfying car to own, but make sure you consciously address the challenges associated with this model. ’

The Peugeot 508 in perspective

The Peugeot 508 is an attractive alternative for anyone looking for a stylish fastback with modern technology and efficient powertrains. The design, ride comfort and available plug-in hybrid options are strong points that set the car apart from its competitors.

At the same time, you need to stay realistic about the known technical issues. Engine failures, transmission problems and electronic faults occur regularly and can lead to higher maintenance costs. The impact on residual value is noticeable, especially with older models without a complete service history.

For those who find the 508 appealing, thorough research beforehand is essential. A pre-purchase inspection, warranty cover and preventive maintenance can prevent many problems or at least reveal them in time. With the right precautions, the 508 can be a satisfying car to own, but make sure you consciously address the challenges associated with this model.