2015 Subaru Levorg (VM)

The Lineartronic high-torque CVT relies on electro-hydraulic solenoids inside the valve body assembly to modulate hydraulic line pressure and torque converter lockup. Between 60,000 and 100,000 miles, internal solenoid coils (most commonly the lockup duty solenoid) can suffer open circuits or out-of-range electrical resistance. This causes the transmission to enter limp mode, illuminating the AT Oil Temp, Check Engine, and Vehicle Dynamics Control warning lamps. Specialist repairers can replace individual solenoids or fit a refurbished valve body without replacing the entire gearbox.

Symptoms: Flashing AT Oil Temp light accompanied by Check Engine and hill start assist warnings, Transmission restricted to limp-home mode with sluggish acceleration...

Est. repair cost: £600–£1,600

The 1.6-litre turbocharged FB16 engine features direct petrol injection without intake runner port wash. As crankcase blow-by gases from the PCV system cycle through the intake manifold, carbon deposits bake onto the backs of the intake valves and ports, typically becoming restrictive around 50,000 to 80,000 miles. The restricted airflow causes cold-start rough idling, stuttering under boost around 2,500 to 3,500 rpm, and reduced fuel efficiency. Walnut shell blasting restores factory performance.

Symptoms: Rough, lumpy idle on cold morning engine starts that smooths out once warm, Hesitation or stuttering under boost when accelerating between 2,500 and 3,500 rpm...

Est. repair cost: £350–£650

The aluminium air-conditioning condenser sits prominently behind the lower front bumper aperture, directly exposed to high-velocity road grit, small stones, and corrosive UK winter road salt. Over five to seven years, corrosion creates microscopic pinhole leaks along the bottom tube welds, releasing the R1234yf refrigerant. The climate control system will then only blow ambient or warm air into the cabin.

Symptoms: Air conditioning fails to blow cold air even when set to minimum temperature, Audible hissing sound behind the centre console vents when AC button is pressed...

Est. repair cost: £280–£550