IsItAGoodCar
Reliability Guide

Common Problems with the
2018 Volvo S90 (SPA)

We've identified 3 known issues that can affect the 2018 Volvo S90 (SPA). 1 of these are serious faults that could be expensive to repair.

3
Known Issues
1
Serious
2
Moderate
0
Minor

All Known Issues

ERAD (Electric Rear Axle Drive) Failure on T8 Recharge

SeriousGearbox & Transmission

Like other SPA hybrid models, the rear electric motor can suffer coolant ingress past seals, damaging internal bearings and disabling pure EV propulsion.

Est. Repair Cost: £3,500–£8,000
Warning Signs:

Whine from rear axle in electric mode, "Propulsion System Service Required" message, Petrol engine runs continuously

What to Inspect:
  • Drive in Pure mode at various speeds
  • Check service history for ERAD coolant inspection campaigns
Verified by IsItAGoodCar Research TeamUpdated

Front Suspension Lower Control Arm Bushing Wear

ModerateSuspension & Chassis

The heavy executive saloon chassis accelerates wear on front hydro-bushings, leading to knocks over urban speed bumps and front-end tramlining.

Est. Repair Cost: £350–£750
Warning Signs:

Clonking noise over sharp road imperfections, Vibration through steering under moderate braking, Uneven front tyre wear

What to Inspect:
  • Inspect front lower arm rear bushes for perished rubber or fluid stains
  • Check steering precision on a test drive
Verified by IsItAGoodCar Research TeamUpdated

D4/D5 Diesel EGR Cooler Soot Blockage & Leakage

ModerateExhaust & Emissions

On high-mileage or town-driven D4 and D5 diesel models, the EGR cooler and valve can clog with soot or develop internal coolant leaks, triggering limp mode and coolant loss.

Est. Repair Cost: £450–£1,100
Warning Signs:

Check Engine Light with EGR flow codes, Gradual coolant level drop without external puddles, Sluggish acceleration

What to Inspect:
  • Inspect coolant expansion tank level
  • Check for soot accumulation around the EGR pipework
  • Review service history for EGR recall campaigns
Verified by IsItAGoodCar Research TeamUpdated

Buying Tips for 2018 Volvo S90 (SPA)

  • ✓On T8 Recharge PHEV models, verify ERAD rear axle motor is quiet under electric load
  • ✓Check for software updates on the Sensus / Google infotainment system
  • ✓Inspect the front suspension lower control arm bushes for splits or play
  • ✓Ensure all safety tech (Pilot Assist, City Safety) initializes correctly without dash warnings
Check a 2018 Volvo S90 (SPA) by Registration