stroke ratio: 0.88:1 – undersquare/long-stroke, 399.4 cc per cylinder, compression ratio: 10.5:1 (China), 11.5:1 (ATN, AUS, AZD, BCB), 12.1:1 (AUS) cylinder block & crankcase grey cast iron; five main bearings, die-forged steel crankshaft cylinder head & valvetrain cast aluminium alloy; four valves per cylinder, 16 valves total, double overhead camshaft (DOHC) fuel system & engine management electronic multipoint injection; Bosch MD 7; Magneti Marelli 4MV (ATN, AUS), 4LV (AZD, BCB), 7GV electronic injection Total Flex gasoline or ethanol (Brazil) DIN-rated motive power & torque outputs, ID codes at 5,700 rpm; at 4,500 rpm — AUS, AZD, ATN, BCB (discontinued) at 5,600 rpm; at 3,800 rpm — BTS, CFNA, CLSA at 5,200 rpm; at 3,750 rpm — CFNB at 5,800 rpm; at 4,200 rpm — (China) applications SEAT Ibiza Mk3, Mk4 & Mk5, SEAT Córdoba Mk2, SEAT León Mk1, SEAT Toledo Mk2, Mk4, Škoda Fabia Mk2, Škoda Rapid, Škoda Roomster (BTS: 05/06->), Škoda Octavia, Volkswagen Polo Mk4, Volkswagen Golf Mk4, Volkswagen Bora, VW Jetta Mk4 (China), Volkswagen Polo sedan 1.8 R4 identificationparts code prefix: ???, ID code: ADF engine displacement & engine configuration inline-four engine (R4/I4); bore x stroke: , stroke ratio: 0.94:1 – undersquare/long-stroke, 445.2 cc per cylinder, compression ratio: 9.0:1 cylinder block & crankcase grey cast iron; five main bearings, die-forged steel crankshaft cylinder head & valvetrain cast aluminium alloy; two valves per cylinder, 8 valves total, hydraulic bucket tappets, timing belt-driven single overhead camshaft (SOHC) fuel system Pierburg 1B3 downdraft carburettor dimensions length: , width , height , dry mass: EWG-rated motive power & torque output at 4,000 rpm; at 2,100 rpm application Volkswagen Industrial Motor (04/94->) reference 1.8 R4 identificationparts code prefix: ???, ID codes: HT, RD, RV, PB, GZ, GX, PF, FP, ABS, ADZ, ACC engine displacement & engine configuration inline-four engine (R4/I4); bore x stroke: , stroke ratio: 0.94:1 – undersquare/long-stroke, 445.2 cc per cylinder, compression ratio: 8.5–10.8:1 cylinder block & crankcase grey cast iron; five main bearings, die-forged steel crankshaft cylinder head & valvetrain cast aluminium alloy; two valves per cylinder, 8 valves total, single overhead camshaft (SOHC) fuel system & engine management Bosch CIS continuous single-point fuel injection system, with or without knock control and electronic timing advance multi-point electronic indirect fuel injection with four intake manifold-sited fuel injectors; Magneti Marelli, Bosch Motronic or Digifant electronic injection Total Flex, Gasoline or Ethanol (BR) DIN-rated motive power & torque outputs, ID codes, applications at