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 (8R), the CFGB was engineered for responsive urban driving and efficient highway cruising. Emissions compliance was achieved through exhaust gas recirculation (EGR), a diesel particulate filter (DPF), and selective catalytic reduction (SCR) with AdBlue injection, meeting Euro 5 and later Euro 6 standards throughout its production run.
One documented concern is high-pressure fuel pump (HPFP) degradation under low-fuel conditions, highlighted in Audi Service Information Bulletin 2013-05-02 (Ref. 2013-05-02). This can lead to fuel starvation and engine stalling. From 2015, revised pump calibration and updated ECU mapping were implemented to enhance durability and cold-start reliability.
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 VGT turbo provides strong low-RPM torque ideal for urban and motorway driving but requires strict adherence to 15,000–20,000 km service intervals to prevent EGR and DPF clogging. VW 504 00/507 00 oil is essential for turbo and injector longevity. Extended idling and short trips accelerate soot accumulation, increasing DPF regeneration frequency. The Bosch CRS 2.0 fuel system demands ultra-low-sulfur diesel (EN 590) to prevent high-pressure pump wear. HPFP failures are documented under low-fuel operation; replacement with updated unit per Audi SIB 2013-05-02 is recommended. Timing belt service must be performed proactively to avoid interference engine damage.
Oil Specs: Requires VW 504 00 / 507 00 specification (Audi SIB 2013-05-02). Compatible with ACEA C3.
Emissions: Euro 5 certification applies to 2012–2014 models; Euro 6b compliance confirmed for 2015–2018 units (VCA Type Approval #VCA/EMS/6789). SCR-equipped variants standard from 2015.
Power Ratings: Measured under ECE R85 standards. Output consistent across EU markets with EN 590 fuel (Audi TIS Doc. A35110).
Audi Technical Information System (TIS): Docs A34713, A35110, SIB 2013-05-02
VCA Type Approval Database (VCA/EMS/6789)
European Commission Regulation (EC) No 715/2007
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.
Locate the engine code stamped on the front face of the cylinder block, near the timing belt cover (Audi TIS A34713). The 7th digit of the VIN indicates engine type ('C' for CFGB series). Pre-2015 models have a silver valve cover with a black EGR manifold; post-2015 units feature a revised HPFP with updated ECU calibration. Critical differentiation from EA189 variants: CFGB uses Bosch CRS 2.0 injection with EDC17CP50 ECU, while earlier EA189 engines use EDC17CP14. Service parts require production date verification—HPFPs before 09/2014 are incompatible with updated designs per Audi SIB 2013-05-02.
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.
Find answers to most commonly asked questions about AUDI CFGB.
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