The Audi CGLB is a 1,984 cc, inline — four turbocharged petrol engine produced between 2019 and 2023. It belongs to the Volkswagen Group’s updated EA888 Gen 4 engine family, featuring advanced thermal management, a 12 V mild — hybrid system (MHEV), and direct fuel injection. In its standard tuning, it produces 140 kW (190 PS) and 320 Nm of torque, with enhanced low — end responsiveness due to electric turbocharger assistance and dual injection (TFSI + MPI).
Fitted primarily t…
All CGLB variants meet Euro 6d emissions standards .
The Audi CGLB is a 1,984 cc inline-four turbocharged petrol engine from the EA888 Gen 4 family (2019–2023). It integrates dual injection, electric turbo assistance, and mild hybrid technology to deliver responsive performance with reduced emissions. Designed for Euro 6d compliance, it balances refinement and efficiency in Audi’s mid-size lineup.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,984 cc | |
Fuel type | Petrol | |
Configuration | Inline-4, DOHC, 16-valve | |
Aspiration | Turbocharged with electrically assisted turbo (eTurbo) | |
Bore × stroke | 82.5 mm × 92.8 mm | |
Power output | 140 kW (190 PS) @ 4,200–6,000 rpm | |
Torque | 320 Nm @ 1,450–4,100 rpm | |
Fuel system | Bosch HDEV6 direct injection + multi-point injection (MPI) | |
Emissions standard | Euro 6d | |
Compression ratio | 11.0:1 | |
Cooling system | Water-cooled with dual-circuit thermal management | |
Turbocharger | Electrically assisted turbo (Garrett eTurbo, 200 mbar boost assist) | |
Timing system | Chain (reinforced; front-mounted with improved tensioner) | |
Oil type | Refer to vehicle handbook / manufacturer specification | |
Dry weight | 112 kg |
The Audi CGLB was used across Audi's B9.5 platform with transverse mounting and shared architecture with Volkswagen Group siblings. This engine received platform-specific adaptations-shorter intake tracts in the A4 and revised cooling layouts in the Q5-and from 2021 received updated fuel system components, creating interchange limits. All adaptations are documented in OEM technical bulletins.
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Analysis derived from manufacturer technical service bulletins and industry workshop records. Repair procedures should follow manufacturer guidelines.
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The CGLB delivers strong performance and good efficiency, but early models (2019-2020) had reliability concerns, especially high-pressure fuel pump wear. Later revisions (post-2021) improved pump durability, so well-maintained examples can be quite robust. Regular servicing and using high-quality oil (0W-20 VW 504 00) greatly aid longevity.
The biggest issues are high-pressure fuel pump wear (leading to misfires or hard starting), eTurbo control faults, and intake carbon buildup due to PCV system oil vapour. Other complaints include oil leaks from gaskets and occasional misfires. These are well-documented in Audi service bulletins.
This 2.0L petrol was used in the Audi A4 (B9.5), A5 (B9.5), and Q5 (facelift) from 2019 to 2023. It was primarily offered as the 40 TFSI variant. The engine is part of the EA888 Gen 4 family shared across Volkswagen Group brands but remains specific to Audi's mid-size lineup in this power output.
Aftermarket ECU tuning is common on the CGLB platform, but increasing boost or altering engine parameters accelerates component wear, impacts emissions compliance, and may void vehicle warranties. Any modifications should be evaluated carefully by a qualified specialist.
Very competitive. In an A4 40 TFSI (140 kW) from 2021, typical consumption is ~8.0 L/100km (city) and ~5.8 L/100km (highway), or about 40 mpg UK combined. Real-world figures depend on driving style, but expect 38-44 mpg (UK) on mixed roads for a healthy CGLB engine.
Yes. The EA888 series (like most modern Audis) is an interference engine. This means if the timing chain jumps or breaks, pistons can strike open valves, causing catastrophic engine damage. That's why chain maintenance is critical - any warning rattles should be addressed immediately.
Audi specifies a 0W-20 synthetic oil meeting VW 504 00 (petrol) or 507 00 (multi-vehicle) specification. Always use a quality oil designed for turbocharged direct-injection engines and change it at regular intervals (around 15,000 km or as Audi recommends) to ensure proper fuel pump and turbo lubrication.
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Regulation (EC) No 715/2007
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Commission Regulation (EU) 2017/1151
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