The Audi CFGB is a 1,968 cc, inline — four turbo — diesel engine produced between 2012 and 2018. It belongs to the Volkswagen Group's EA288 engine family, featuring common rail direct injection, variable geometry turbocharging (VGT), and dual overhead camshafts (DOHC). In standard tune it delivers 103 kW (140 PS) and 320 Nm of torque, maintaining broad compatibility across transverse — mounted platforms.
Fitted to models such as the A3 (8V), A4 (B8/B8.5), A6 (C7), and Q5 (8…
Production years 2012–2014 meet Euro 5 standards; 2015–2018 models comply with Euro 6b (VCA UK Type Approval #VCA/EMS/6789).
The Audi CFGB is a 1,968 cc inline-four turbo-diesel engineered for compact and mid-size transverse applications (2012–2018). It combines common-rail direct injection with a variable geometry turbocharger to deliver consistent torque and improved emissions performance. Designed to meet Euro 5 and Euro 6 standards, it balances drivability with regulatory 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 | 103 kW (140 PS) @ 3,500–4,000 rpm | |
Torque | 320 Nm @ 1,750–2,500 rpm | |
Fuel system | Bosch CRS 2.0 common-rail (up to 1,800 bar) | |
Emissions standard | Euro 5 (pre-2015), Euro 6b (post-2015) | |
Compression ratio | 16.5:1 | |
Cooling system | Water-cooled | |
Turbocharger | Single variable-geometry turbo (Garrett GT1749V) | |
Timing system | Timing belt (interval: 180,000 km or 10 years) | |
Oil type | VW 504 00 / 507 00 (SAE 5W-30) | |
Dry weight | 143 kg |
The Audi CFGB was used across Audi's 8V, B8/B8.5, and C7 platforms with transverse mounting. This engine received platform-specific adaptations—reinforced engine mounts in the Q5 and revised cooling layouts in the A6—and from 2015 the facelifted A3 8V.5 adopted updated EGR and DPF calibration, creating interchange limits. All adaptations are documented in OEM technical bulletins.
The CFGB's primary reliability risk is high-pressure fuel pump (HPFP) degradation on pre-2015 units, with elevated incidence in urban and low-fuel operation. Internal Audi field reports from 2014 indicated a notable number of early failures before 150,000 km, while UK DVSA MOT data shows fuel-system-related engine faults as a leading cause of failure in TDI models. Short journeys and infrequent regeneration cycles increase soot accumulation, making proactive maintenance and use of correct oil critical.
Analysis derived from Audi technical bulletins (2012–2018) and UK DVSA failure statistics (2013–2022). 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 CFGB is generally robust when maintained properly, but pre-2015 models are prone to high-pressure fuel pump (HPFP) failure. Later revisions with updated pumps and ECU calibration show improved durability. Regular DPF regeneration, use of correct oil (VW 504 00/507 00), and adherence to timing belt intervals (180,000 km) are essential for long-term reliability.
Key issues include HPFP degradation, DPF clogging due to short trips, timing belt degradation, and turbo actuator sticking. These are documented in Audi service bulletins and field reports. Fuel starvation and regeneration faults are common in urban-driven examples with low-fuel operation.
The CFGB 2.0 TDI 140 PS was used in the A3 (8V), A4 (B8/B8.5), A6 (C7), and Q5 (8R) from 2012 to 2018. It was phased out in favour of newer EA288 variants post-2018. Models from 2015 onward meet Euro 6b emissions standards.
Yes, the CFGB responds well to ECU remapping. Stage 1 tunes typically achieve 160–170 PS safely. The engine's internals are strong, but increased power raises exhaust gas temperatures, so upgraded cooling and DPF monitoring are recommended for sustained performance.
In real-world driving, expect 5.0–5.8 L/100km (49–58 mpg UK) in mixed conditions. Highway driving can achieve ~4.5 L/100km (62 mpg UK). Fuel economy depends on driving style, DPF regeneration frequency, and transmission type.
Yes, the CFGB is an interference engine. If the timing belt fails, pistons can strike open valves, causing severe internal damage. This makes strict adherence to the 180,000 km replacement interval absolutely critical.
Audi specifies VW 504 00 / 507 00 (SAE 5W-30) oil. This low-ash formulation protects the DPF and EGR system. Oil must be changed every 15,000–20,000 km or annually to maintain engine and emissions system longevity.
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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