KNOWN FAULTS · Toyota

Toyota Corolla (XII) 1.2 T common problems.

2019–2026 · Petrol

Sources are not verified in real time and no entry confirms that your car is affected.

2 known faults with sources

Ignition coils and carbon on the 1.2 turbo (8NR-FTS)Engine

Engine / equipment: 1.2 turbo petrol (8NR-FTS): Auris, C-HR and Corolla
Period mentioned: 2015–2022
Symptoms: Poor acceleration and strong jerking, misfires and limp mode; at high mileage, loss of power and higher consumption from carbon on injectors, valves and intake.
Possible cause described: The coils fitted up to mid-2018 have a suspected manufacturing defect; Toyota usually replaces them as goodwill. Direct injection encourages carbon build-up.
Check for the garage: Read misfire codes and check the coil date; ask for a goodwill replacement; clean the intake if there are deposits.
Cost cited in the source: No verified estimate; ask the garage for a quote.A rough figure from the original database, not an up-to-date quote.

Applies if: Weak points of this model from inspections, breakdown statistics and recalls; anything specific to one engine is stated in the sheet.

Battery, rear brakes, brake servo and eCall on the Corolla (from 2019)Known weak points

Engine / equipment: Toyota Corolla (2019 onwards: 1.2 turbo and hybrids)
Period mentioned: 2019 onwards
Symptoms: A starter battery that fails early on the first cars; seized and rusty rear brakes, especially on hybrids; a brake servo that can fail on 2019 cars (more pedal effort); an eCall that does not activate.
Possible cause described: The brake-servo pump is replaced under warranty or goodwill. A recall for the eCall on cars built 2018 to 2021.
Check for the garage: Check the campaigns by VIN; brake hard now and then to clean the rear discs; test the battery.
Cost cited in the source: No verified estimate; ask the garage for a quote.A rough figure from the original database, not an up-to-date quote.