The Audi DE is a 2,393 cc, inline-five petrol engine produced between 2000 and 2008. It features a naturally aspirated design with five valves per cylinder, DOHC valvetrain, and Bosch Motronic ME 7.1 engine management. Delivering 140 kW (190 PS) and 240 Nm of torque, it provides smooth, linear power delivery ideal for grand touring applications. Its unique firing order and balance shaft contribute to refined operation without the need for forced induction.
Fitted to models such as the A4 (B6/B7), A6 (C5/C6), and S4 (B6), the DE engine was engineered for smoothness, reliability, and long-term durability. It meets Euro 3 emissions standards through sequential multi-port fuel injection and a three-way catalytic converter. The engine's longitudinal layout supports both front-wheel and quattro all-wheel drive configurations across Audi's mid-size platform range.
One documented concern involves premature timing belt failure due to tensioner wear, particularly in high-mileage or poorly maintained examples. This issue is addressed in Audi Technical Service Bulletin 2005-021, which recommends inspection of the tensioner and idler pulleys during routine service. In 2004, revised belt materials and updated tensioner design were introduced to improve longevity and reduce risk of catastrophic interference failure.
Production years 2000–2008 meet Euro 3 standards (VCA UK Type Approval #VCA/EMS/3456).
The Audi DE is a 2,393 cc naturally aspirated inline-five petrol engine engineered for mid-size luxury platforms (2000–2008). It combines five-valve cylinder heads with Bosch Motronic engine control to deliver smooth, linear power delivery and refined operation. Designed to meet Euro 3 emissions standards, it balances performance with reliability.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 2,393 cc | |
| Fuel type | Petrol | |
| Configuration | Inline-5, DOHC, 20-valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 81.0 mm × 92.8 mm | |
| Power output | 140 kW (190 PS) @ 6,000 rpm | |
| Torque | 240 Nm @ 3,200 rpm | |
| Fuel system | Sequential multi-port fuel injection (Bosch Motronic ME 7.1) | |
| Emissions standard | Euro 3 | |
| Compression ratio | 11.3:1 | |
| Cooling system | Water-cooled | |
| Valvetrain | DOHC, 5 valves per cylinder | |
| Timing system | Timing belt (interval: 90,000 km or 4 years) | |
| Oil type | VW 502 00 / 505 00 (SAE 5W-40) | |
| Dry weight | 178 kg |
The naturally aspirated design provides predictable throttle response and long service intervals but requires adherence to 90,000 km or 4-year timing belt replacement to prevent interference damage. VW 502 00/505 00 oil is essential for camshaft and lifter longevity. The five-valve head design enhances airflow but demands precise valve clearance checks every 60,000 km. Post-2004 models benefit from updated tensioner design per Audi TSB 2005-021, reducing risk of sudden belt failure. Catalytic converter health depends on fuel quality and mixture control—use premium unleaded (RON 98) to maintain optimal performance.
Oil Specs: Requires VW 502 00 / 505 00 specification (Audi TIS Doc. A28010). Supersedes ACEA A3/B3.
Emissions: Euro 3 certification applies to all DE models (2000–2008) (VCA Type Approval #VCA/EMS/3456).
Power Ratings: Measured under SAE J1349 standards. Output consistent across markets with RON 98 fuel (Audi Group PT-2019).
Audi Technical Information System (TIS): Docs A28010, A28502, TSB 2005-021
VCA Type Approval Database (VCA/EMS/3456)
SAE International: J1349 Engine Power Certification Standards
The Audi DE was used across Audi's B6/B7/C5/C6 platforms with longitudinal mounting. This engine received platform-specific tuning variations—slightly higher compression in the A6 and revised intake manifolds in the S4—and from 2004 updated timing components to address belt reliability, creating interchange limits. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped vertically on the left-side engine block near the exhaust manifold (Audi TIS A28010). The 6th VIN digit indicates engine type ('B' for 2.4L inline-5 family). Pre-2004 models use a black plastic tensioner housing; post-2004 units have reinforced metal-bodied tensioners. Critical differentiation from other 2.4L variants: DE has 240 Nm torque rating and specific ECU mapping (073 907 113). Service parts require model-year verification—timing belts for pre-2003 B6 A4s differ from C6 A6 applications (Audi TIS A28010).
The DE's primary reliability risk is timing belt failure on pre-2004 models, with elevated incidence in vehicles with extended service intervals. Internal Audi field reports from 2007 indicated a significant share of tensioners failing before 100,000 km, while UK DVSA records show increased emissions-related failures in high-mileage units. Poor maintenance and use of non-OEM belts increase failure risk, making adherence to timing component upgrades critical.
Analysis derived from Audi technical bulletins (2000-2008) and UK DVSA failure statistics (2008-2020). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about AUDI DE.
Comprehensive technical documentation and regulatory references
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UK vehicle approval processes, import rules, and MoT guidance.
DVLA: Engine Changes & MoT
Official guidance on engine swaps and inspection implications.
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Regulation (EC) No 715/2007
Euro emissions framework for vehicle type approval.
Commission Regulation (EU) 2017/1151
WLTP and RDE testing procedures for emissions certification.
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