Brief description of engines (Audi A2)

Letter designation	AUA	BBY	BAD
Toxicity standards 0G	EU4	EU4	EU 4
Number of cylinders/valves per cylinder	4/4	4/4	4/4
Working volume (l)	1,4	1,4	1,6
Power (kW at rpm)	55/5000	55/5000	81/5800
Torque (Nm at rpm)	126/3800	126/3800	155/4400
Inner diameter of cylinder(mm)	76,5	76,5	76,5
Stroke (mm)	75,6	75,6	86,9
Compression	10,5	10,5	11,5
Injection/ignition system	Magnet iMarelli	Magnet iMarelli	Bosch Motron ic
Gasoline (not less than)	95 AI ¹⁾	95 AI ¹⁾	98 AI ²⁾
Hydraulic valve compensators	X	X	X
Self-diagnosis	X	X	X
Lambda regulation	X	X	X
Electric throttle control (electron, gas pedal)	X	X	X
Supplying additional air to the exhaust tract	-	-	-
Exhaust gas recirculation	-	-	-
Turbocharging	-	-	-
Control of exhaust toxicity after 3,5,7,9... years	X	X	X

1) It is also permissible to use AI 91, but this will reduce the power.
2) It is also permissible to use AI 95, but this will reduce the power.

Letter designation	ANY	AMF	ATL	BHC
Exhaust gas toxicity standards	EU III + D4	Euro III	EU4	EU4
Number of cylinders/valves per cylinder	3/2	3/2	3/2	3/2
Working volume (l)	1,2	1,4	1.4	1,4
Power (kW at rpm)	45/4000	55/4000	66/4000	55/4000
Torque (Nm at rpm)	140/1800...2400	195/2200	230/2200	195/2200
Inner diameter of cylinder (mm)	76,5	79,5	79,5	79,5
Piston stroke (mm)	86,4	95,5	95,5	95,5
Compression ratio	19,5	19,5	18,5	19,5
Injection/ignition system	Diesel (Direct injection)	Diesel (Direct injection)	Diesel (Direct injection)	Diesel (Direct injection)
Hydraulic valve compensators	X	X	X	X
Self-diagnosis	X	X	X	X
Lambda regulation	-	-	-	-
Electric, throttle control (electronic gas pedal)	X	X	X	X
Supplying additional air to the exhaust tract	-	-	-	-
Exhaust gas recirculation	X	x	X	X
Turbocharging	X	X	X	X
Control of exhaust toxicity after 3,5,7,9... years	X	X	X	X