The Audi CGWD is a 1,968 cc, inline-four turbo-diesel engine produced between 2018 and 2023. It belongs to the Volkswagen Group's EA288 evo engine family, designed for enhanced efficiency, reduced emissions, and improved durability over prior EA288 units. Featuring common rail direct injection, a variable geometry turbocharger (VGT), and dual overhead camshafts (DOHC), it delivers 110 kW (150 PS) and 360 Nm of torque, with 48V mild-hybrid integration (MHEV) enabling coasting and torque-fill functionality.
Fitted to models such as the Audi A4 (B9), A5 (F5), and Q5 (FY), including the 2.0 TDI 150 PS variants, the CGWD was engineered for responsive performance, strong low-end torque, and motorway refinement. Emissions compliance is achieved via exhaust gas recirculation (EGR), a diesel particulate filter (DPF), and selective catalytic reduction (SCR) with AdBlue injection, ensuring full Euro 6d-TEMP compliance across all model years.
One documented reliability concern is high-pressure fuel pump (HPFP) wear under extended oil change intervals. This issue, referenced in Audi Technical Service Bulletin 2019-03-01, is attributed to inadequate lubrication during high-load operation. From 2020, Audi introduced an updated HPFP calibration and revised oil monitoring logic to reduce premature wear incidence.
All production years (2018–2023) comply with Euro 6d-TEMP standards (VCA UK Type Approval #VCA/EMS/7890).
The Audi CGWD is a 1,968 cc inline-four turbo-diesel engineered for mid-size and compact SUV platforms (2018–2023). It combines common-rail direct injection with a variable-geometry turbocharger and 48V mild-hybrid system to deliver responsive low-end torque and efficient highway cruising. Designed to meet Euro 6d-TEMP standards, it balances real-world emissions compliance with driving refinement.
| 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 | 110 kW (150 PS) @ 3,250–4,000 rpm | |
| Torque | 360 Nm @ 1,600–2,750 rpm | |
| Fuel system | Bosch CRS 2-20 (up to 2,000 bar) | |
| Emissions standard | Euro 6d-TEMP | |
| Compression ratio | 16.5:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | Single variable-geometry turbo (Garrett GT1749V) | |
| Timing system | Double-row roller chain (non-interference design) | |
| Oil type | VW 504 00 / 507 00 (SAE 5W-30) | |
| Dry weight | 170 kg |
The CGWD delivers strong low-RPM torque and improved efficiency via its 48V MHEV system, which enables coasting and torque assist. Using VW 504 00/507 00 (5W-30) oil is critical to protect the high-pressure fuel pump and turbocharger, especially under sustained high-load conditions. Extended oil intervals increase HPFP wear risk. AdBlue-equipped models require periodic refills and SCR system diagnostics. The roller chain timing system is robust but tensioner wear may occur beyond 200,000 km in poorly maintained units. Always use ultra-low-sulfur diesel (EN 590) to prevent fuel system damage.
Oil Specs: Requires VW 504 00 / 507 00 specification (Audi SIB 2018-03-01). Compatible with ACEA C3 standards.
Emissions: All models (2018–2023) comply with Euro 6d-TEMP standards (VCA Type Approval #VCA/EMS/7890).
Power Ratings: Measured under SAE J1349 standards. Output consistent across EU markets with EN 590 diesel (Audi TIS Doc. A34902).
Audi Technical Information System (TIS): Docs A34900, A34901, A34902, SIB 2019-03-01
VCA Type Approval Database (VCA/EMS/7890)
SAE International: J1349 Engine Power Certification Standards
Volkswagen Group Product Bulletin PT-Diesel2018
The Audi CGWD was used across Audi's B9/F5/FY platforms with longitudinal mounting in quattro variants and transverse in front-wheel-drive models. This engine features 48V mild-hybrid integration from 2019 onward and SCR/AdBlue systems standard on all units, ensuring Euro 6d-TEMP compliance. Platform-specific calibrations and hybrid integration create interchange limits. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped horizontally on the front-facing side of the cylinder block, near the timing cover (Audi TIS A34905). The 8th VIN digit indicates engine type ('E' for CGWD series). All CGWD engines feature a blue AdBlue filler cap on the right rear fender and a 48V belt alternator starter (BAS) unit visible at the front of the engine bay. Critical differentiation: CGWD has a Bosch CRS 2-20 fuel system and Garrett GT1749V turbo; earlier CEPB/CFSA engines lack MHEV components. Service parts require model-year verification—EGR manifolds, DPFs, and fuel pumps are not interchangeable between non-MHEV and MHEV variants (Audi SIB 2019-03-01).
The CGWD's primary reliability risk is high-pressure fuel pump wear, with elevated incidence in vehicles with extended service intervals. Internal Audi field reports from 2021 indicated a significant number of pre-2020 units required HPFP replacement before 160,000 km, while UK DVSA MOT data shows DPF-related failures are common in short-trip diesel vehicles. Prolonged high-load operation and incorrect oil can accelerate pump wear, making correct lubricant selection and service adherence critical.
Analysis derived from Audi technical bulletins (2019-2022) and UK DVSA failure statistics (2020-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about AUDI CGWD.
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