The Volkswagen-Audi V8 engine family is a series of mechanically similar, gasoline-powered and diesel-powered, V8, internal combustion piston engines, developed and produced by the Volkswagen Group, in partnership with Audi, since 1988. They have been used in various Volkswagen Group models, and by numerous Volkswagen-owned companies. The first spark-ignition gasoline V8 engine configuration was used in the 1988 Audi V8 model; and the first compression-ignition diesel V8 engine configuration was used in the 1999 Audi A8 3.3 TDI Quattro. The V8 gasoline and diesel engines have been used in most Audi, Volkswagen, Porsche, Bentley, and Lamborghini models ever since. The larger-displacement diesel V8 engine configuration has also been used in various Scania commercial vehicles; such as in trucks, buses, and marine (boat) applications.
Discontinued production engines Gasoline All Volkswagen Group V8 gasoline engines are constructed from a lightweight, cast aluminum alloy cylinder block (crankcase) and cylinder heads. They all use multi-valve technology, with the valves being operated by two overhead camshafts per cylinder bank (sometimes referred to as 'quad cam'). All functions of engine control are carried out by varying types of Robert Bosch GmbH Motronic electronic engine control units. They are all longitudinally front-mounted, and the V8 engines listed below were for a long time only used in cars bearing the Audi marque, but latterly being installed in Volkswagen Passenger Cars flagship Volkswagen Phaeton.
3.6 V8 32v 184kW identification parts code prefix: 077, ID code: PT engine displacement & engine configuration 90° V8; bore x stroke: , stroke ratio: 0.94:1 – undersquare/long-stroke, 445.2 cc per cylinder; compression ratio: 10.6:1 cylinder block & crankcase cast aluminium alloy; five main bearings, die-forged steel crankshaft cylinder heads & valvetrain cast aluminium alloy; four valves per cylinder, 32 valves total, timing belt and simplex chain-driven (hybrid system) double overhead camshafts fuel system, ignition system, engine management common rail multi-point electronic sequential indirect fuel injection with eight intake manifold-sited fuel injectors; twin Hitachi ignition coils (one per cylinder bank) with Bosch longlife spark plugs, Bosch Motronic electronic engine control unit (ECU); 95 RON/ROZ(91 AKI) EuroPremium (regular) unleaded recommended for optimum performance and fuel economy DIN-rated motive power & torque output at 5,800 rpm; at 4,000 rpm application Audi V8 (10/88-11/93)
3.7 V8 32v 169kW identification parts code prefix: 077, ID codes: AEW, AKJ engine displacement & engine configuration 90° V8; bore x stroke: , stroke ratio: 1.03:1 – oversquare/short-stroke, 462.1 cc per cylinder; compression ratio: 10.8:1 cylinder block & crankcase cast aluminium alloy; five main bearings, die-forged steel crankshaft cylinder heads & valvetrain cast aluminium alloy; four valves per cylinder, 32 valves total, timing belt and simplex chain-driven (hybrid system) double overhead camshafts fuel system, ignition system, engine management common rail multi-point electronic sequential indirect fuel injection with eight intake manifold-sited fuel injectors; twin LAZ pre-power output stage control units (one per cylinder bank) and eight single spark ignition coils with Bosch longlife spark plugs, Bosch Motronic electronic engine control unit (ECU); 95 RON/ROZ(91 AKI) EuroPremium (regular) unleaded recommended for optimum performance and fuel economy DIN-rated motive power & torque output at 5,500 rpm; at 2,700 rpm application Audi D2 A8 (AEW: 07/95-12/98, AKJ: 06/97-12/98)
3.7 V8 40v 191-206kW identification parts code prefix: 077, codes d'identification :AQG, AKC, BFL engine displacement & engine configuration 90° V8; bore x stroke: , stroke ratio: 1.03:1 – oversquare/short-stroke, 462.1 cc per cylinder; compression ratio: 11.0:1 (BFL: 11.3:1) cylinder block & crankcase cast aluminium alloy; five main bearings, die-forged steel crankshaft cylinder heads & valvetrain cast aluminium alloy; five valves per cylinder, 40 valves total, low friction roller rocker fingers, timing belt and simplex chain-driven (hybrid system) hollow double overhead camshafts, variable inlet camshaft timing aspiration 3-stage variable composite intake manifold fuel system, ignition system, engine management common rail multi-point electronic sequential indirect fuel injection with eight intake manifold-sited fuel injectors; eight single spark ignition coils with Bosch longlife spark plugs, Bosch Motronic electronic engine control unit (ECU); 95 RON/ROZ(91 AKI) EuroPremium (regular) unleaded recommended for optimum performance and fuel economy DIN-rated motive power & torque outputs, ID codes at 6,000 rpm; at 3,250 rpm — AQG, AKC at 6,000 rpm; at 3,750 rpm — BFL applications Audi D2 A8 (AQG: 10/98-02/01, AKC: 05/00-09/02), Audi D3 A8 (BFL: 11/02-05/06)
Awards was voted 'best technical innovation', and awarded the "Golden Pegasus" by "Za ruljom" at the Moscow Motor Show
4.2 V8 32v 206-250kW identification parts code prefix: 077
engine displacement & engine configuration 90° V8; bore x stroke: , stroke ratio: 0.91:1 – undersquare/long-stroke, 521.5 cc per cylinder; compression ratio: 10.3:1 (ABH: 10.8:1) cylinder block & crankcase cast aluminium alloy; five main bearings, die-forged steel crankshaft cylinder heads & valvetrain cast aluminium alloy; four valves per cylinder, 32 valves total, timing belt and simplex chain-driven (hybrid system) double overhead camshafts fuel system, ignition system, engine management common rail multi-point electronic sequential indirect fuel injection with eight intake manifold-sited fuel injectors; Bosch Motronic electronic engine control unit (ECU); 98 RON/ROZ(93 AKI) EuroSuperPlus (premium) unleaded recommended for maximum performance and fuel economy dimensions mass: depending on variant DIN-rated motive power & torque outputs, ID codes at 5,800 rpm; at 4,000 rpm — ABH at 5,900 rpm; at 4,000 rpm — AEC at 6,000 rpm; at 3,000 rpm — ABZ, AKG, ARS, ASG at 6,600 rpm; at 3,500 rpm — AHK at 6,600 rpm; at 3,500 rpm — AHC, AKH, AQJ applications Audi V8 (ABH: 08/91-11/93), Audi C4 S4 (ABH: 10/92-07/94), Audi C4 S6 (AEC: 09/94-10/97), Audi C5 A6 (ARS: 04/99-05/01, ASG: 06/00-01/05), Audi D2 A8 (ABZ: 06/94-05/99, AKG: 06/97-12/98), Audi C4 S6 Plus (AHK: 06/96-10/97), Audi D2 S8 (AHC: 09/96-12/98, AKH: 08/97-12/98)
4.2 V8 40v 220-265kW identification parts code prefix: 077 engine displacement & engine configuration 90° V8; bore x stroke: , stroke ratio: 0.91:1 – undersquare/long-stroke, 521.5 cc per cylinder; compression ratio: 11.0:1 cylinder block & crankcase cast aluminium alloy; five main bearings, die-forged steel crankshaft cylinder heads & valvetrain cast aluminium alloy; five valves per cylinder, 40 valves total, timing belt and simplex chain-driven (hybrid system) double overhead camshafts fuel system, ignition system, engine management two linked common rail fuel distributor rails, multi-point electronic sequential indirect fuel injection with eight intake manifold-sited fuel injectors; Bosch Motronic electronic engine control unit (ECU); 98 RON/ROZ(93 AKI) EuroSuperPlus (premium) unleaded recommended for maximum performance and fuel economy DIN-rated motive power & torque outputs, ID codes at 6,200 rpm; at 3,000 rpm — ARS, ASG at 6,200 rpm; at 3,000 rpm — AUX, AWN at 7,000 rpm; at 3,400 rpm — AQJ, ANK at 7,000 rpm; at 3,400 rpm — AQH, AVP, AYS, BCS applications Audi C5 A6 (ARS: 99-00, ASG: 00-04), Audi D2 A8 (AUX: 99-01, AWN: 01-02), Audi C5 S6 (AQJ: 99-01, ANK: 01-04), Audi S8 Plus (D2) (AQH: 05/99-02/01, AVP: 09/00-09/02, {Japan only – BCS: 09/00-02/01, AYS: 02/01-09/02})
4.2 V8 40v T 331-353kW (C5 RS6) Based on the existing 4.2 V8 from the Audi C5 S6, this engine was tuned with the assistance of VW Group subsidiary Cosworth Technology (now MAHLE Powertrain), and featured two parallel turbochargers, known as 'biturbo', with two side-mounted intercoolers (SMICs). Enlarged and modified intake and exhaust ports on the new five valve cylinder heads, together with new induction and dual branch exhaust systems, a re-calibrated Motronic engine management system, revised cooling system, and decorative carbon fibre engine covers complete the upgrade.
The initial variant of this engine generates a specific power output of per litre displacement, and the 'RS6 Plus' variant gives per litre. identification parts code prefix: 077.A engine displacement & engine configuration 90° V8; bore x stroke: , stroke ratio: 0.91:1 – undersquare/long-stroke, 521.5 cc per cylinder; compression ratio: 9.8:1, two oil coolers – oil:water and oil:air, two or three (dependent on target market) coolant radiators cylinder block & crankcase cast aluminium alloy; five main bearings, die-forged steel crossplane crankshaft with shared crankpins, two-part oil sump – upper: baffled cast alloy, lower: pressed steel, simplex roller chain driven oil pump cylinder heads & valvetrain cast aluminium alloy; five valves per cylinder (three inlet, and two sodium-cooled exhaust valves), 40 valves total, low-friction roller-bearing finger cam followers with automatic hydraulic valve clearance compensation, timing belt and simplex roller chain-driven (hybrid system) hollow-tube double overhead camshafts (the crankshaft-driven timing belt operates both exhaust camshafts, which in turn individually chain-drive the inlet camshafts), variable inlet camshaft timing aspiration two carbon fibre-cased siamesed air filters, two hot-film air mass meters, cast alloy intake manifold with Bosch 'E-Gas' drive by wire electronic throttle control valve, 'biturbo' – two fast-acting turbochargers (one per cylinder bank) with vacuum-actuated excess pressure control, two all-alloy side-mounted intercoolers (SMICs) optimised to prevent pressure loss fuel system, ignition system, engine management fuel tank sited electric low pressure fuel lift pump, underfloor electric high pressure relay fuel pump, common rail multi-point electronic sequential indirect fuel injection with eight intake manifold-sited fuel injectors; eight individual single-spark ignition coils, NGK longlife spark plugs; Bosch Motronic ME 7.1.1 electronic engine control unit (ECU); 98 RON/ROZ(93 AKI) EuroSuperPlus (premium) unleaded recommended for maximum performance and fuel economy exhaust system dual-branch exhaust pipes with metallic-element catalytic converters and secondary air injection, four lambda sensors, European EU3 emissions standard DIN-rated motive power & torque outputs, ID codes & applications at 5,700–6,400 rpm; at 1,950–5,600 rpm — BCY: Audi C5 RS6 (07/02-09/04) at 6,000–6,400 rpm; at 1,950–6,000 rpm — BRV: Audi C5 RS6 Plus (04/04-09/04)
Diesel 3.3 V8 32v TDI CR 165kW identification parts code prefix: 057.A; ID code: AKF engine configuration & engine displacement 90° V8 engine, Turbocharged Direct Injection (TDI) turbodiesel; ; bore x stroke: , stroke ratio: 0.91:1 - undersquare/long-stroke, 416.0 cc per cylinder, compression ratio: 18.5:1, up to cylinder pressure, cylinder block & crankcase compacted vermicular graphite cast iron (GJV/CGI); two-part cast aluminium alloy oil sump, five diameter main bearings, die–forged steel crossplane crankshaft with shared crankpins, diagonally split connecting rods, simplex roller chain-driven oil pump, pistons oil-cooled by cast-in cooling ducts cylinder heads & valvetrain cast aluminium alloy; four valves per cylinder, 32 valves total, sliding-finger cam followers with automatic hydraulic valve clearance compensation, 2x hybrid-driven double overhead camshafts (2xDOHC - two overhead camshafts per cylinder bank - 'quad cam', inlet camshafts are driven from a front-sited timing belt from the crankshaft, exhaust camshafts are gear-driven at the rear from the inlet camshafts)