The Audi CAVG is a 1,968 cc, inline — four turbocharged diesel engine produced between 2015 and 2020. It belongs to the EA288 engine family, featuring a compacted graphite iron (CGI) block, aluminium head, and common rail direct injection. Delivering 110 kW (150 PS) and 340 Nm of torque, it was engineered for transverse applications in compact and mid — size vehicles with emphasis on efficiency and low — end drivability.
Fitted to models such as the Audi A3 (8V), Q2, and A4 (B9)…
Production years 2015–2020 meet Euro 6b standards (VCA UK Type Approval #VCA/EMS/6790).
The Audi CAVG is a 1,968 cc inline-four turbocharged diesel engine engineered for compact and mid-size models (2015–2020). It combines common rail direct injection with a chain-driven DOHC valvetrain to deliver responsive torque and improved efficiency. Designed to meet Euro 6b emissions, it balances real-world performance with environmental compliance.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,968 cc | |
Fuel type | Diesel | |
Configuration | Inline-4, DOHC, 16-valve | |
Aspiration | Turbocharged | |
Bore × stroke | 81.0 mm × 95.5 mm | |
Power output | 110 kW (150 PS) @ 3,250–4,200 rpm | |
Torque | 340 Nm @ 1,750–3,000 rpm | |
Fuel system | Bosch CRS 2-20 common rail (up to 2,000 bar) | |
Emissions standard | Euro 6b | |
Compression ratio | 16.5:1 | |
Cooling system | Water-cooled | |
Turbocharger | IHI IS19 turbocharger with variable geometry turbine (VGT) | |
Timing system | Roller chain (lifetime design, inspection recommended at 180,000 km) | |
Oil type | VW 507 00 / 505 00 (SAE 5W-30) | |
Dry weight | 148 kg |
The Audi CAVG was used across Audi's A3/Q2/A4 platform with transverse mounting. This engine received platform-specific adaptations-revised intake manifolds and ECU tuning-and from 2018 the updated HPFP system per SIB 01 17 19, creating service part interchange limits. All adaptations are documented in OEM technical bulletins.
The CAVG's primary reliability risk is high-pressure fuel pump wear under aggressive driving or low-quality fuel, with elevated incidence in vehicles with extended service intervals. Internal Audi field reports from 2017 indicated a significant share of pre-2018 engines required HPFP replacement before 150,000 km, while UK DVSA records show fuel system faults as a leading cause of MOT failure in high-mileage A3s. Short-trip driving and delayed maintenance increase HPFP and turbo stress, making interval adherence critical.
Analysis derived from Audi technical bulletins (2015–2020) and UK DVSA failure statistics (2020–2023). Repair procedures should follow manufacturer guidelines.
The most common questions about engine codes, what they mean, how to find them and how this database works
The Audi CAVG offers strong low-end torque and good fuel economy, but pre-2018 models are prone to high-pressure fuel pump failure if operated on low-quality diesel or without regular maintenance. Later revisions improved HPFP durability. When maintained properly—with correct 5W-30 oil, quality diesel (EN 590), and periodic EGR/DPF cleaning—it can be reliable. Neglecting service intervals increases risk of premature wear.
Key issues include high-pressure fuel pump wear leading to misfires, VGT turbo actuator sticking, EGR and intake carbon buildup, and AdBlue dosing system faults. These are documented in Audi service bulletins. Regular highway driving, use of quality fuel and oil, and timely servicing help mitigate most risks.
The CAVG engine was used in the Audi A3 (8V), Q2 (GA), and A4 (B9) from 2015 to 2020, specifically in the 2.0 TDI variant. It was also shared with SEAT Leon (5F) and Škoda Octavia (5E) models in the same period. All applications meet Euro 6b emissions standards.
Yes, the CAVG engine responds well to ECU remapping. Stage 1 tunes typically achieve 180–195 PS safely. The stock turbo and internals support moderate increases, but supporting mods like intercooler and exhaust improve reliability. Tuning should be performed by specialists familiar with EA288 engine limits and emissions compliance.
In the Audi A3 2.0 TDI, combined fuel economy is approximately 4.2 L/100km (67 mpg UK). Real-world consumption ranges from 4.8 L/100km (58 mpg) in city driving to 3.9 L/100km (72 mpg) on highways. Driving style and transmission type significantly influence actual figures.
Yes, the CAVG is an interference engine. If the timing chain fails, the pistons can collide with open valves, causing severe internal damage. Immediate attention to chain noise or warning lights is essential. Always follow Audi's recommended inspection interval of 180,000 km for chain and guide condition.
The CAVG requires VW 507 00 or 505 00 specification oil, typically SAE 5W-30. Use of correct oil ensures turbocharger, timing chain, and high-pressure fuel pump longevity. Change oil every 15,000 km or annually to maintain engine health and prevent sludge buildup.
Comprehensive technical documentation and regulatory references
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AUDI Official Site
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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)
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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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