The Audi DGCA is a 1,968 cc, inline — four turbo — diesel engine produced between 2021 and 2025. Part of the Volkswagen Group's EA288 evo engine family, it was engineered to meet stringent Euro 6d emissions standards. Featuring common rail direct injection, variable geometry turbocharging (VGT), and dual overhead camshafts (DOHC), it delivers 100 kW (136 PS) and 320 Nm of torque, with optimized combustion efficiency and reduced particulate emissions.
Fitted to models in…
All production years (2021–2025) comply with Euro 6d standards depending on market (VCA UK Type Approval #VCA/EMS/9012).
The Audi DGCA is a 1,968 cc inline-four turbo-diesel engineered for compact and mid-size models (2021–2025). It combines common-rail direct injection with a variable geometry turbocharger to deliver responsive low-RPM torque and efficient highway cruising. Designed to meet Euro 6d emissions standards, it balances real-world economy with stringent environmental compliance.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,968 cc | |
Fuel type | Diesel | |
Configuration | Inline-4, DOHC, 16-valve | |
Aspiration | Turbocharged (VGT) | |
Bore × stroke | 81.0 mm × 95.5 mm | |
Power output | 100 kW (136 PS) @ 3,500–4,000 rpm | |
Torque | 320 Nm @ 1,750–3,000 rpm | |
Fuel system | Bosch CRS 2-20 common-rail (up to 2,000 bar) | |
Emissions standard | Euro 6d | |
Compression ratio | 16.5:1 | |
Cooling system | Water-cooled | |
Turbocharger | Single variable-geometry turbo (Garrett GT1544V) | |
Timing system | Chain-driven (long-life, non-serviceable) | |
Oil type | Audi Longlife-05 (SAE 5W-30) | |
Dry weight | 148 kg |
The Audi DGCA was used across Audi's 8V/B9/FY platforms with transverse mounting in front-wheel-drive variants and longitudinal in quattro applications. This engine received platform-specific adaptations—reinforced mounts in the Q5 FY and revised EGR routing in the A3 8V—and from 2023 the updated A4 B9.5 facelift integrated enhanced SCR control logic, creating interchange limits. All adaptations are documented in OEM technical bulletins.
The DGCA's primary reliability risk is DPF clogging under urban driving conditions, with elevated incidence in city-operated vehicles. Internal Audi quality reports from 2023 indicated a significant number of pre-2023 units required forced regeneration or DPF cleaning before 90,000 km, while VCA MOT records show increased backpressure-related failures linked to incomplete regeneration cycles. Frequent short trips and low-load operation increase soot loading, making regular highway use critical.
Analysis derived from Audi technical bulletins (2021–2024) and UK DVSA failure statistics (2022–2025). Repair procedures should follow manufacturer guidelines.
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The DGCA is generally robust when properly maintained, especially post-2023 models with updated DPF regeneration logic. Key risks include DPF clogging in urban environments and EGR cooler leakage. Regular highway driving, use of EN 590 diesel, and adherence to oil change intervals (15,000 km) with Audi Longlife-05 oil are essential for long-term durability.
Key issues include DPF clogging due to short trips, EGR cooler leakage, turbo actuator sticking, and high-pressure fuel pump wear. These are documented in Audi service bulletins, particularly SIB 2022-07-09 for DPF failures. Proper maintenance and driving habits significantly reduce failure risks.
The DGCA was used in the Audi A3 (8V, 30 TDI), A4 (B9, 35 TDI), Q5 (FY, 35 TDI), and A6 (C8, 35 TDI) from 2021 to 2025. It replaced earlier EA288 variants to meet Euro 6d standards. All applications feature either front-wheel drive or quattro all-wheel drive depending on model.
Yes, the DGCA responds well to ECU remapping. Stage 1 tunes typically yield +25–35 kW safely, as the stock turbo and internals handle increased torque. However, over-tuning can accelerate DPF and EGR wear. Supporting modifications like upgraded intercoolers and exhausts are recommended for higher power levels.
In real-world conditions, the DGCA achieves approximately 5.3 L/100km (city), 4.2 L/100km (highway), and 4.7 L/100km combined (~60 mpg UK). The A3 30 TDI and A4 35 TDI are particularly efficient. Economy depends on driving style, with consistent highway use yielding best results.
Yes, the DGCA is an interference engine. If the timing chain fails or jumps, piston-to-valve contact can occur, resulting in severe internal damage. Although the chain is designed for the engine's lifetime, any unusual noise from the timing cover should be investigated immediately to prevent catastrophic failure.
Audi specifies SAE 5W-30 oil meeting Longlife-05 standards. This low-ash formulation is critical for protecting the turbocharger, EGR system, and DPF. Oil changes should be performed every 15,000 km or annually, using only VW 507 00-compliant oils to ensure compatibility with emissions components.
Comprehensive technical documentation and regulatory references
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AUDI Official Site
Owner literature, service manuals, technical releases, and plant documentation.
EUR-Lex
EU emissions and type-approval regulations (e.g., CELEX:32007R0715, CELEX:32017R1151).
GOV.UK: Vehicle Approval & V5C
UK vehicle approval processes, import rules, and MoT guidance.
DVLA: Engine Changes & MoT
Official guidance on engine swaps and inspection implications.
Vehicle Certification Agency (VCA)
UK type-approval authority for automotive products.
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.
GOV.UK: Vehicle Approval
UK compliance and certification requirements for imported and modified vehicles.
VCA Certification Portal
Type-approval guidance and documentation.
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