Engine Volkswagen AER

The 1.0-liter gasoline engine Volkswagen AER 1.0 MPi was produced from 1996 to 1999 and was installed on a number of compact models of the concern, such as the Lupo, Polo, as well as the Seat Ibiza and Arosa. This power unit replaced the OHV motor under the AHT index, which was very outdated by that time.

The EA111-1.0 series includes: AER, AUC.


Production years 1996-1999
Displacement, cc 999
Fuel system injector
Power output, hp 50
Torque output, Nm 86
Cylinder block aluminum R4
Block head aluminum 8v
Cylinder bore, mm 67.1
Piston stroke, mm 70.6
Compression ratio 10.5
Features SOHC
Hydraulic lifters yes
Timing drive belt
Phase regulator no
Turbocharging no
Recommended engine oil 5W-30
Engine oil capacity, liter 3.2
Fuel type petrol
Euro standards EURO 2
Fuel consumption, L/100 km (for VW Polo 1998)
— city
— highway
— combined
Engine lifespan, km ~240 000

The engine was installed on:

  • Seat Arosa 1 (6H) in 1997 – 1999;
  • Seat Ibiza 2 (6K) in 1996 – 1999;
  • Volkswagen Lupo 1 (6X) in 1998 – 1999;
  • Volkswagen Polo 3 (6N) in 1996 – 1999.

Disadvantages of the VW AER engine

  • This power unit is generally reliable, but regularly worries about trifles.
  • Most failures are associated with the ignition system: candles, coil and high-voltage wires.
  • The timing belt is designed for about 90 thousand km, and when it breaks, the valves always bend.
  • Camshaft position sensor and antifreeze temperature sensor often fail.
  • The crankcase ventilation system freezes in frost and squeezes oil through the dipstick.

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