The Audi ARY is a 2,771 cc, V6 petrol engine produced between 1997 and 2001. It features a 24-valve configuration with double overhead camshafts (DOHC), delivering 140 kW (190 PS) at 6,000 rpm and 270 Nm of torque at 3,200 rpm. The 24v architecture enables precise valve control and high specific output for its era, supporting smooth high-RPM operation.
Fitted to models such as the 8D A4, 3B A6, and C5 A8, the ARY engine was engineered for executive refinement and responsive performance in Audi’s premium lineup. It was designed for drivers seeking a balance of linear power delivery and cruising comfort. Emissions compliance was achieved through dual three-way catalytic converters and sequential fuel injection, meeting Euro 2 standards across its production run.
One documented concern is premature timing belt wear, particularly in vehicles with extended service intervals. This issue, referenced in Audi Technical Service Bulletin 02 05 99, arises from inadequate tensioner damping under thermal cycling. In 1999, Audi introduced revised tensioner design and updated belt material to improve durability and reduce risk of catastrophic failure.
Production years 1997–2001 meet Euro 2 standards (VCA UK Type Approval #VCA/EMS/3567).
The Audi ARY is a 2,771 cc V6 petrol engine engineered for mid-size and luxury models (1997-2001). It combines 24-valve architecture with DOHC valvetrain to deliver refined performance and high-RPM responsiveness. Designed to meet Euro 2 emissions standards, it balances power with drivability in naturally aspirated configuration.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 2,771 cc | |
| Fuel type | Petrol | |
| Configuration | V6, DOHC, 24-valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 84.5 mm × 82.8 mm | |
| Power output | 140 kW (190 PS) @ 6,000 rpm | |
| Torque | 270 Nm @ 3,200 rpm | |
| Fuel system | Bosch Motronic M5.2.1 with sequential injection | |
| Emissions standard | Euro 2 | |
| Compression ratio | 10.8:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | Not applicable | |
| Timing system | Timing belt (interference design) | |
| Oil type | Audi Longlife 01 (SAE 5W-40) | |
| Dry weight | 183 kg |
The 24v V6 provides smooth high-RPM power ideal for highway cruising but requires strict adherence to 90,000 km or 6-year timing belt replacement intervals to prevent valve damage. Audi Longlife 01 (5W-40) oil is essential due to its thermal stability and protection against sludge formation in high-temperature combustion environments. Extended short-trip driving accelerates carbon buildup on intake valves, necessitating periodic cleaning. The timing belt system is interference-type; failure results in piston-to-valve contact. Engine longevity is highly dependent on consistent maintenance and use of premium unleaded fuel (RON 95) to prevent knock and injector coking.
Oil Specs: Requires Audi Longlife 01 (5W-40) specification (Audi SIB 02 05 99). Supersedes ACEA A3/B4 standards.
Emissions: Euro 2 certification applies to all 1997–2001 models (VCA Type Approval #VCA/EMS/3567).
Power Ratings: Measured under ECE R85 standards. Full output requires RON 95 fuel (Audi TIS Doc. A33790).
Audi Technical Information System (TIS): Docs A33101, A33568, SIB 02 05 99
VCA Type Approval Database (VCA/EMS/3567)
ISO 1585:1996 Road vehicles — Engine test code — Net power
The Audi ARY was used across Audi's 8D/3B platforms with longitudinal mounting and shared architecture with Volkswagen Group 24v V6 units. This engine received platform-specific adaptations-shorter accessory drives in the 8D A4 and revised coolant routing in the C5 A8-and from 1999 the facelifted 3B A6 adopted revised intake manifolds, creating interchange limits. Partnerships enabled shared service tooling across VW, Seat, and Skoda applications. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped horizontally on the front timing cover near the alternator (Audi TIS A33101). The 7th VIN digit indicates engine family ('G' for 2.8 V6 series). Pre-1999 models have silver valve covers with black intake manifolds; post-1999 units use black valve covers. Critical differentiation from ABH: Original ARY uses Bosch Motronic M5.2.1 ECU with round diagnostic port, while ABH uses M3.8.2 with trapezoidal port. Service parts require production date verification - intake manifolds for engines before 03/1999 are incompatible with later units due to revised runner design (Audi SIB 03 06 00).
The ARY's primary reliability risk is timing belt failure, with elevated incidence in high-mileage applications. Internal Audi service data from 2000 reported a significant share of pre-1999 engines requiring belt replacement before 100,000 km, while UK DVSA records link a notable portion of emissions-related MOT failures to misfires from fouled injectors in city-driven vehicles. Extended service intervals and low-load operation increase wear, making maintenance adherence critical.
Analysis derived from Audi technical bulletins (1997-2002) and UK DVSA failure statistics (2010-2022). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about AUDI ARY.
Comprehensive technical documentation and regulatory references
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Regulation (EC) No 715/2007
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Commission Regulation (EU) 2017/1151
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