Volvo S60/V60 T8 Twin Engine PHEV ReplacementCompare Prices & Get Quotes

A Volvo S60/V60 T8 engine replacement costs between £5,500 and £9,000 supply-only for a rebuilt unit, with fitting adding £1,000-£2,000 depending on your location and whether you choose a Volvo PHEV specialist or main dealer. Used B4204T34 or B4204T35 engines can be found from £2,500-£4,500, but come with no warranty and no upgraded components. One forum user reported an £11,000 engine replacement cost for their T8.

• Rebuilt B4204T34: £5,800-£7,500 supply only
• Rebuilt B4204T35: £6,000-£7,800 supply only
• Rebuilt B4204T39 Polestar: £7,000-£9,000 supply only
• Specialist fitting: £1,000-£2,000 additional (12-18 labour hours)

The ERAD (Electric Rear Axle Drive) is a common T8 failure point. Symptoms include hesitation on pulling away, pulling away then cutting out, juddering (axle tramp), or a loud clunking from the rear. If you experience any of these, get the codes read at a Volvo dealer immediately - if the car is within 4-5 years old, Volvo may contribute to the repair cost.

• ERAD repair (gears only): circa £2,500-£3,500 specialist
• Full ERAD replacement: circa £6,000-£8,000
• Volvo contribution: 100% up to 4 years, 50% up to 5 years

Yes, if your S60/V60 T8 is otherwise sound and has no major body or chassis issues. A 2018-2020 S60/V60 T8 values between £18,000 and £38,000, making a £5,500-£9,000 rebuilt engine replacement - around 15-30% of the car's value - a financially sound decision on higher-value examples. For older or higher-mileage examples under £15,000, evaluate carefully. One owner reported their T8 reached 176,000 miles after an ERAD rebuild at 103k and engine replacement at 130k.

• Replacement cost typically 15-30% of vehicle value for 2018-2022 examples
• Rebuilt engines come with 12-month unlimited-mileage warranty
• Keep the car for 2+ years: replacement makes strong financial sense for high-value examples

A full Volvo S60/V60 T8 engine replacement typically takes 3-6 working days from delivery of the replacement engine. The complex PHEV powertrain requires additional time for hybrid system integration and calibration. Specialist fitters often complete the work in 3-4 days, while main dealers may take 5-6 days due to scheduling.

• Specialist workshop: 3-4 days typical
• Main dealer: 5-6 days typical
• ERAD repair only: 2-3 days typical

The T8 range includes several engine codes with different power outputs. B4204T28 (318hp, 2016-2018) is the earliest T8 unit. B4204T34 (303hp, 2018-2020) and B4204T35 (320hp, 2018-2024) are the most common UK variants. B4204T39 (333hp, 2019-2021) and B4204T48 (318hp, 2021-present) are Polestar Engineered variants. All are 2.0-litre turbo+supercharged petrol engines paired with a 65kW electric motor driving the rear axle.

• B4204T35: most common, 320hp
• B4204T39: Polestar Engineered, 333hp, 430Nm
• B4204T48: latest Polestar Engineered, 318hp, 430Nm

The T8 powertrain is sophisticated and generally reliable when properly maintained, but the ERAD unit is a known weak point. The internal combustion engine itself is robust but the twin-charged (turbo + supercharger) setup adds complexity. Using the correct 0W-20 oil (Castrol Edge Professional V or VCC RBS0-2AE) and regular servicing are essential. The ERAD is covered by Volvo's extended warranty - 100% up to 4 years, 50% up to 5 years.

• ERAD: most common failure; repair costs £2,500-£8,000
• ICE engine: robust but expensive to replace (£7,500-£10,000+)
• Regular servicing with correct oil is essential for longevity