The Audi DEJA is a 1,984 cc, inline-four turbocharged petrol engine produced between 2020 and 2025. Part of the Volkswagen Group's EA888 evo4 engine family, it was engineered to meet stringent Euro 6d emissions standards. Featuring direct fuel injection (TSI), variable valve timing (AVS), and a twin-scroll turbocharger, it delivers 140 kW (190 PS) and 320 Nm of torque, with improved combustion efficiency and reduced particulate emissions.
Fitted to models including the Audi A4 (B9), A5 (F5), and Q5 (FY), the DEJA was designed for balanced performance, combining responsive low-end torque with enhanced motorway refinement. Emissions compliance is achieved via a gasoline particulate filter (GPF), cooled exhaust gas recirculation (EGR), and dual-circuit cooling, enabling full Euro 6d compliance across European markets.
One documented concern is high-pressure fuel injector coking under short-trip driving conditions, highlighted in Audi Technical Service Bulletin 2021-06-08. This can lead to misfires and increased particulate emissions if urban driving dominates. From 2022, revised injector tip geometry and updated ECU calibration were introduced to improve deposit resistance and maintain emissions compliance.
All production years (2020–2025) comply with Euro 6d standards depending on market (VCA UK Type Approval #VCA/EMS/8901).
The Audi DEJA is a 1,984 cc inline-four turbocharged petrol engine engineered for compact and mid-size models (2020–2025). It combines TSI direct injection with a twin-scroll turbocharger to deliver responsive low-RPM torque and efficient highway cruising. Designed to meet Euro 6d emissions standards, it balances real-world performance with stringent environmental compliance.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,984 cc | |
| Fuel type | Petrol | |
| Configuration | Inline-4, DOHC, 16-valve | |
| Aspiration | Turbocharged (twin-scroll) | |
| Bore × stroke | 82.5 mm × 92.8 mm | |
| Power output | 140 kW (190 PS) @ 4,200–6,000 rpm | |
| Torque | 320 Nm @ 1,500–4,000 rpm | |
| Fuel system | Bosch HDEV6 direct injection (up to 350 bar) | |
| Emissions standard | Euro 6d | |
| Compression ratio | 11.0:1 | |
| Cooling system | Dual-circuit water-cooled (low-temp/high-temp) | |
| Turbocharger | Single twin-scroll turbo (BorgWarner) | |
| Timing system | Chain-driven (long-life, non-serviceable) | |
| Oil type | Audi Longlife-04 (SAE 5W-30) | |
| Dry weight | 138 kg |
The twin-scroll turbo provides strong low-end torque ideal for city driving but requires regular highway runs to prevent GPF clogging. Audi Longlife-04 (5W-30) oil is essential to maintain turbo and high-pressure fuel system longevity. Short-trip driving increases soot accumulation, necessitating active GPF regeneration cycles. The EGR system, particularly the cooler, is prone to carbon buildup; inspection every 80,000 km is recommended per Audi SIB 2021-06-08. GPF-equipped models require periodic regeneration and catalyst monitoring to avoid limp mode. Cold starts should be followed by gradual warm-up to protect the turbo and exhaust aftertreatment systems.
Oil Specs: Requires Audi Longlife-04 (5W-30) specification (Audi SIB 2020-12-09). Compatible with ACEA C2 standards.
Emissions: Euro 6d compliance verified for all units (2020–2025) in UK markets (VCA Type Approval #VCA/EMS/8901).
Power Ratings: Measured under SAE J1349 standards. Output consistent across EU markets using EN 228 petrol (Audi TIS Doc. A20108).
Audi Technical Information System (TIS): Docs A18843, A19234, A19505, SIB 2021-06-08
VCA Type Approval Database (VCA/EMS/8901)
SAE International: J1349 Engine Power Certification Standards
The Audi DEJA was used across Audi's B9/F5/FY platforms with longitudinal mounting in quattro applications and transverse in front-wheel-drive variants. This engine received platform-specific adaptations—reinforced mounts in the Q5 FY and revised EGR routing in the A4 B9—and from 2022 the updated A5 F5.5 facelift integrated enhanced GPF control logic, creating interchange limits. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped horizontally on the front face of the cylinder block, near the timing cover (Audi TIS A18893). The 8th VIN digit indicates engine type ('F' for DEJA). All DEJA engines feature a top-mounted EGR cooler with integrated GPF; no pre-2020 variants exist. Critical differentiation: DEJA uses a Bosch ME17.2 ECU with 144-pin connector, while earlier EA888 variants use different ECUs. Service parts require production date verification—fuel injectors before 08/2022 are not compatible with later calibration updates (Audi SIB 2021-06-08).
The DEJA's primary reliability risk is fuel injector coking under urban driving conditions, with elevated incidence in city-operated vehicles. Internal Audi quality reports from 2022 indicated a significant number of pre-2022 units required injector cleaning or replacement before 100,000 km, while VCA MOT records show increased particulate-related failures linked to injector degradation. Frequent short trips and low-load operation increase carbon buildup, making fuel quality and regular highway use critical.
Analysis derived from Audi technical bulletins (2020–2023) and UK DVSA failure statistics (2021–2025). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about AUDI DEJA.
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