Audi A1
Compact turbo engine from the EA111 family with 63 kW. Timing chain instead of cam belt, but chain tensioner issues on early build years. Economical in city use.
Anxiety engine — costly failure looming
86 hp 1.2L with a known problem: timing chain elongation — known production fault. The risk of expensive repairs overshadows any driving pleasure.
Engine Weaknesses 7
Manufacturing defect: worn stamping tools produced imprecise chain links. The chain stretches as early as 30,000–40,000 km, skips teeth, and causes severe engine damage.
Symptoms: Rattling at cold start from the engine area, engine warning light, rough running, engine failure in extreme cases
Like other TSI engines of this generation, the 1.2 TSI tends to elevated oil consumption from piston ring leakage. Checking the oil level at every refuel is recommended.
Symptoms: Low oil level warning, faint blue exhaust smoke, oil consumption over 0.5 l/1,000 km
Short-trip use and oil starvation from chain problems can damage the 1.2 TSI turbocharger. Carbon deposits inside the turbo cause boost pressure loss and power reduction.
Symptoms: Whistling noise from turbo area, power loss, blue smoke, elevated oil consumption
The electronic boost pressure actuator on the 1.2 TSI CBZA corrodes through contact between aluminium and steel without insulation. Chattering noise between 1,800–3,000 rpm.
Symptoms: Chattering knock at 1,800–3,000 rpm, power loss, boost problems
Early CBZA engines from 2014–2015 with elevated oil consumption from coking piston rings and worn valve stem seals. VW improved the piston rings from 2016.
Symptoms: Blue smoke at cold start, oil level drops faster than normal, elevated consumption
The 1.2 TSI tends to misfires across multiple cylinders at higher mileages due to faulty ignition coils. All ignition coils are often replaced together.
Symptoms: Juddering under load, engine warning light flashing, rough idle, power loss
Direct injection on the CBZA bypasses intake valves, so crankcase ventilation deposits carbon on the valves. Walnut blasting is the recommended cleaning method.
Symptoms: Juddering at cold start, rough idle, elevated fuel consumption, power loss
Vehicle Weaknesses 4
From around the seventh year of use, coil springs can snap from material fatigue and corrosion. The front axle is most commonly affected. A broken spring is an immediate safety hazard.
Early A1 8X models (2010–2013) showed increased breakdown rates from faulty ignition cables. Misfires and power loss are the result.
Electric window regulators fail regularly. The cause is usually a worn motor, snapped cable, or faulty control unit. Driver and passenger doors are most commonly affected.
The air conditioning loses refrigerant over the years through leaking seals and hoses. On older cars from around 8 years, the AC compressor and condenser become prone to wear.