Volvo XC90

The D5 bi-turbo D4204T23 develops problems with the high-pressure turbocharger at high mileage. Loose turbine shaft and oil in the air pipe are typical findings. Repair of both turbos has cost owners €2,500–7,500 at the dealer.

Symptoms: Oil in air pipe after turbo, whistling from turbo area, power loss, smoke under load

The D5 Drive-E (235 hp) shows turbocharger failure, sometimes at relatively low mileages. SwedeSpeed forum documents turbine wheel collapse. Debris can contaminate the intercooler and intake tract.

Symptoms: Heavy power loss, black smoke, metallic noise from engine bay, car goes into limp mode

The D5 bi-turbo is also affected by the EGR cooler recall. Although higher exhaust temperatures slow down soot paste formation somewhat, EGR problems also occurred on this engine variant.

Symptoms: EGR fault code, engine throttling, in worst cases fire risk

EGR valve and cooler on the D5 are prone to soot contamination, as on the D4. Regular motorway driving slows the process.

Symptoms: Check engine light (EGR fault code P0400/P0401), idle fluctuations, power loss

DPF clogging from frequent short trips, as regeneration temperature is not reached. Incomplete regeneration cycles cause fuel dilution of engine oil and raise the oil level.

Symptoms: DPF warning light, power drop, elevated oil level, diesel smell in engine oil

Plastic intake manifolds on diesel models from 2015–2017 can overheat and deform, posing a fire risk. Check for recall and ensure replacement by a Volvo dealer.

Recall 2019–2020: the automatic emergency braking system (AEB) does not correctly detect obstacles and does not activate. Check recall status at the Volvo dealer and have the software update applied.

The ERAD (electric rear axle drive) on the XC90 T8 is a known critical weak point. Clutch wear sends metal particles into the differential oil, leading to bearing damage and complete failure. Repair outside warranty can cost up to €9,000.

On the XC90 II B5/B6, plastic turbocharger hoses rupture under boost pressure. Several owners report sudden power loss on the motorway. Volvo responded with reinforced hoses in later model years.

On the XC90 II with optional air suspension (Four-C / Air Suspension) the compressor fails, especially on older vehicles or after moisture ingress. The car drops onto its bumpstops and is no longer driveable normally.

In 2016 around 11,000 XC90 II vehicles were recalled in Germany: the A/C drain hose was defective and let water into the footwell. Damp wiring looms can permanently damage control units.

The optional air suspension on the XC90 II can fail in low ambient temperatures: the vehicle loses ride height, the compressor runs endlessly or reports a fault. Software updates partially help.