Volvo S90: common problems and what you need to know

The Volvo S90 is a luxury saloon that combines comfort with Scandinavian elegance, but like every modern vehicle this model also has some well-known technical issues. From engine problems to software faults, owners regularly report specific complaints that affect driving comfort and maintenance costs. This article gives you a clear overview of the most frequently reported problems with the Volvo S90, so you know what to look out for.

Why knowing about S90 problems helps you as an owner

If you own a Volvo S90, or are thinking of buying one, understanding common problems is valuable. You avoid surprises, prepare for maintenance costs and recognise symptoms in good time. That can make the difference between small repairs and expensive breakdowns. For potential buyers, this knowledge helps in asking the right questions and making a well-informed choice.

Many owners experience problems with the same components. Recognising these patterns is important. It helps you decide when it is the right moment to seek professional help. Information about Volvo car problems gives additional insight into what you can expect with different Volvo models.

The S90’s reputation: reliable, but with caveats

Volvo is known for safety and durable design. The S90 scores reasonably on reliability, but is not among the most trouble-free saloons in its class. Owners appreciate the quality of the interior and the driving comfort, but at the same time report specific technical complaints. These are mainly concentrated around electronics, the transmission and certain engine variants.

The overall build quality is solid. Complex systems bring additional vulnerabilities with them. Plug-in hybrid models (cars that run both electrically and on fuel and can be charged externally) are an example of this. Regular maintenance therefore remains essential to prevent problems. Over the years, Volvo has carried out recalls (official notices from the manufacturer for free repairs) for specific issues. Certain problems are known across the factory range.

Engine-related complaints with the S90

The Volvo S90 is available with several engine types: the D4 diesel, the T5 and T6 petrol engines and the T8 plug-in hybrid. Each type has its own problems. With the D4 diesel, owners sometimes report faults in the AdBlue system (a system for exhaust gas after-treatment). This leads to reduced performance. Warning lights come on in the instrument cluster. The cause is often contaminated sensors or problems with the AdBlue tank.

The T5 and T6 petrol engines regularly suffer from cooling issues. Leaking coolant or faulty thermostats occur, with overheating as a possible result. With the T8 plug-in hybrid, battery and charging problems are not uncommon. Some owners report a limited electric range (the maximum number of miles on one charge). Slow charging times also occur. This is sometimes linked to software issues in the battery management system (the electronics that control and monitor the battery).

Another complaint concerns irregular engine running in the petrol versions, often caused by contaminated inlet valves or worn spark plugs. You notice this through a jerky start-up phase or fluctuating revs when idling.

Transmission problems that crop up regularly

The eight-speed automatic gearbox in the S90 sometimes gives rise to complaints. Owners report jolts when changing gear, delayed responses or the gearbox getting stuck in one gear. These symptoms often point to worn transmission fluid or defective solenoids (electromagnetic valves in the automatic gearbox). Software errors in the transmission control also occur.

With some models, vibrations occur during acceleration. The transmission then shifts at low revs. This can be caused by wear in the torque converter. Volvo has released software updates for certain model years to resolve shifting problems. Not all complaints have been solved by these.

Preventive maintenance on the gearbox helps. Have the transmission fluid checked and replaced in line with the service schedule. Do not ignore jerky shifting; this can worsen and lead to costly repairs.

Electronics and infotainment: commonly heard faults

The Sensus infotainment system (the central multimedia system with screen and controls) in the S90 is advanced, but it does have software problems. Owners regularly report sluggish performance, the screen freezing or functions such as navigation and Apple CarPlay (linking an iPhone to the car’s screen) dropping out. This mainly occurs with older software versions. A reset or software update solves many of these problems, but some complaints keep coming back.

Parking sensors sometimes fail. Safety systems such as Pilot Assist (a driver assistance system that helps with steering and keeping distance) or City Safety (an automatic emergency braking system) can also show faults. This leads to error messages in the instrument cluster and safety functions being switched off. Contaminated sensors or electrical faults are often the cause. Cleaning can help, but sometimes replacement is necessary.

The cameras for 360-degree vision and automatic main beam also regularly cause problems. These systems can fail due to water ingress or defective wiring. Check that all electrical functions are working correctly, especially after rain or carwash visits.

Chassis and suspension: points to watch

The S90 with air suspension (suspension with air bellows instead of steel springs) offers comfort, but this system is prone to faults. Owners sometimes report that the car leans to one side, slowly sinks after parking, or that the air suspension no longer responds to driving modes. This points to leaks in the air bellows, defective compressors or faulty sensors.

Even without air suspension, component problems occur. Shock absorbers and anti-roll bars wear over time, especially with intensive use. You notice this through knocking or rattling noises over bumps or in corners. Worn bushes in the suspension (the system of springs, dampers and links between the car and the wheels) lead to looseness. The handling also deteriorates.

Check the suspension regularly for leaks, cracks in bushes and wear on the shock absorbers. Recognise problems early and have them repaired. This prevents more expensive damage later on and keeps the car comfortable and safe.

Braking system and safety features under the microscope

The brakes of the S90 generally perform well, but wear depends on driving style and use. With the T8 plug-in hybrid, regenerative braking slows down wear, but some owners report vibrations when braking or reduced braking power. This may indicate warped brake discs or worn brake pads.

Safety systems such as City Safety can show faults. Error messages about automatic emergency braking functions do occur, often due to contaminated radar or camera sensors behind the windscreen. Clean these sensors regularly and have the system checked if warnings persist.

The electronic parking brake also sometimes has faults, where it seizes or will not activate. This is often linked to electrical faults or software problems. A diagnostic check at a Volvo dealer (where the car’s computer is read with specialised equipment) will clarify the cause.

Interior and exterior: cosmetic and functional complaints

The interior of the S90 exudes quality, but some owners report wear to upholstery, creaking noises from the dashboard or trim panels coming loose. Intensive use or an older age of the car play a role here. Creaking noises often arise from expanding plastics or loose clips.

On the outside, owners sometimes report problems with LED lighting. Headlights or rear lights can fail, usually due to faulty modules (electronic control units or components) or water ingress. Replacing LED units can be costly, but is essential for safety.

The keyless entry function is not always reliable in some models. This may be due to weak batteries in the key, faults in the receivers or interference. Test the function regularly and replace key batteries in good time.

Known recalls for the S90

Volvo has carried out several recalls for the S90. A well-known recall concerned the coolant pump on certain models, which could seize and cause overheating. Another recall focused on the fuel line, which could leak and pose a fire risk.

There have also been recalls for software problems in the engine management (the electronic control system of the engine) and the transmission. Owners are notified about this by Volvo, but it is sensible to check regularly whether your car falls under an ongoing recall. You can do this via the Volvo website or by having the chassis number checked at a dealer.

Make sure recalls are always carried out. This not only prevents problems, but can also be important for insurance claims and resale.

How to recognise problems and what you can do

Many problems with the S90 announce themselves via warning lights in the instrument cluster. Unusual behaviour is also a warning sign. Imagine this: the engine warning light comes on, the transmission shifts jerkily or you hear strange noises from the suspension. Do not ignore these signals.

Have a diagnostic check carried out at a specialist garage or Volvo dealer. Modern cars store fault codes (stored error messages in the car’s computer). These indicate where the problem lies. This saves time and prevents you from replacing unnecessary parts. For electrical and software problems, a dealer is often the best choice, because they have access to the latest software updates.

For mechanical problems such as suspension or engine issues, you can also go to independent garages with Volvo expertise. Compare quotations and ask about their experience with the S90. Choose genuine or high-quality replacement parts. This extends the lifespan of repairs.

Preventive maintenance that avoids problems

Regular maintenance prevents problems with the S90. Follow Volvo’s service schedule and have oil, filters and fluids replaced on time. Check the coolant, brake fluid and transmission fluid at the recommended intervals.

For the T8 plug-in hybrid, it is important to use and charge the high-voltage battery (the large drive battery of the hybrid) regularly. Do not leave the battery in an uncharged state for long periods, as this can shorten its lifespan. Also drive longer distances on petrol from time to time to bring the combustion engine up to temperature.

Keep the sensors and cameras clean. Dirt, snow and ice can disrupt systems and cause error messages. Check the tyres for pressure and tread; the correct tyre pressure improves handling and reduces fuel consumption. Inspect the suspension regularly for wear and leaks.

Update software via the Volvo dealer. On models with this function you can also use over-the-air updates (wireless software updates via the internet). Software updates often resolve known bugs and improve the performance of the electronics and drivetrain.

What to look out for when buying a used S90

Buying a used Volvo S90? Check the service history first. A complete record with stamps from approved garages inspires confidence. Ask about recalls that have been carried out and check whether these have been completed.

Test all electrical functions during a test drive: the infotainment system, sensors, cameras, seat heating and air conditioning. Drive on different types of road. Assess the behaviour of the transmission and suspension. Pay attention to jolts, vibrations and unusual noises.

Check the condition of the engine. Start it from cold and when warm, and listen for irregular noises. With a T8 plug-in hybrid it is important to have the condition of the high-voltage battery checked. Ask about the electric range and compare this with the official figures.

Inspect the underside of the car for rust, leaks and wear. Check the tyres for uneven wear, which can indicate alignment problems. In doubt? Then have a technical inspection carried out. This costs money, but can save you far greater expenses.

Ask the seller about known problems and repairs that have been carried out. Transparency about previous complaints is a good sign. Check the mileage. Compare it with the condition of the interior and wear parts.

The Volvo S90 remains an interesting choice

The Volvo S90 combines luxury, comfort and safety in an elegant package. The model does have known technical issues that require attention. With regular maintenance and timely repairs, the S90 remains a reliable and pleasant car. Careful ownership is important, but rewards you with a driving experience that brings comfort and technology together in a distinctly Scandinavian way.