VW GTI
EA888 in the Polo GTI. 192 hp in a supermini — very sporty. Strong torque, but high wear with spirited use.
Polo GTI 6C — 1.8 TSI replaces 1.4, the better Polo GTI
1.8 TSI with 192 hp replaces the supercharged 1.4. More displacement, more linear, more reliable. Still no Fiesta ST killer, but a noticeably better Polo GTI than the 6R. Manual-only makes it more engaging. Still: competent rather than exciting.
Engine Weaknesses 5
The EA888 Gen3 water pump is a known weak point on the 1.8 TSI CJSA. Defective batches caused coolant loss on numerous MQB platform vehicles (Golf 7, A3, Leon 3). Warranty case on early examples.
Symptoms: Coolant level dropping, coolant smell after a drive, rising temperature gauge
The EA888 Gen3 timing chain is significantly more robust than Gen1/2. However, from about 150,000 km, first signs of elongation can appear. Much less problematic compared to older generations.
Symptoms: Quiet rattle on cold start, camshaft deviation fault codes P0016/P0017 at higher mileage
As with the EA888 Gen3: the thermal management water pump on the 1.8 TSI DAJA develops internal leaks. Seal on the control valve fails. Typically from 50,000 km.
Symptoms: Coolant loss without external leakage, irregular temperature gauge, weak heating
On the DAJA 1.8 TSI EA888 Gen3, the electronically controlled thermostat module can fail, leading to uncontrolled thermal management.
Symptoms: Temperature fluctuations on the dashboard, coolant loss without puddle, overheating warning, cooling system fault code
Early production years of the DAJA 1.0 TSI (2014–2016) suffer from elevated oil consumption due to coked oil scraper rings. VW revised the piston ring geometry in 2016.
Symptoms: Oil level dropping between services, blue smoke, no visible external leak