The Audi CZHA is a 1,984 cc, inline — four turbocharged petrol engine produced between 2016 and 2021. It forms part of the EA888 Gen 3B engine family, featuring both port and direct fuel injection (TFSI), variable valve timing, and integrated exhaust manifolds. In standard tune it delivers 140 kW (190 PS) and 320 Nm of torque, primarily used in A4, A5, and Q5 applications requiring balanced performance and efficiency.
Fitted to key models including the B9 A4, B9 A5, and 8W Q5, t…
Production years 2016–2018 meet Euro 6b standards; 2019–2021 models comply with Euro 6d-TEMP .
The Audi CZHA is a 1,984 cc inline-four turbo-petrol engineered for mid-size platforms (2016–2021). It combines TFSI dual injection with integrated exhaust manifolds to deliver responsive mid-range power and thermal efficiency. Designed to meet Euro 6b (later Euro 6d-TEMP), it balances performance with evolving emissions requirements.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,984 cc | |
Fuel type | Petrol | |
Configuration | Inline-4, DOHC, 16-valve | |
Aspiration | Turbocharged | |
Bore × stroke | 82.5 mm × 92.8 mm | |
Power output | 140 kW (190 PS) @ 4,200–6,000 rpm | |
Torque | 320 Nm @ 1,500–4,100 rpm | |
Fuel system | TFSI: Direct + Port Injection (Bosch HDEV5 200 bar) | |
Emissions standard | Euro 6b (2016–2018); Euro 6d-TEMP (2019–2021) | |
Compression ratio | 9.6:1 | |
Cooling system | Water-cooled, dual-circuit thermostat | |
Turbocharger | Single-scroll turbo with electric wastegate control | |
Timing system | Timing chain (long-life, non-serviceable) | |
Oil type | Refer to vehicle handbook / manufacturer specification | |
Dry weight | 142 kg |
The Audi CZHA was used across Audi's B9 platform with longitudinal mounting and shared across the Volkswagen Group. This engine received platform-specific adaptations-integrated GPF in the Q5 and revised intake tuning in the A5-and from 2019 the updated B9.5 facelift adopted Euro 6d-TEMP calibration, creating emissions and software compatibility limits. All adaptations are documented in OEM technical bulletins.
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Field reports and technical service bulletins highlight component wear patterns under high-load operation. Adherence to manufacturer service intervals and approved fluid specifications is critical for long-term reliability.
Analysis derived from manufacturer technical service bulletins and industry workshop records. Repair procedures should follow manufacturer guidelines.
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The CZHA is generally robust when maintained properly, though pre-2019 models show higher incidence of HPFP wear. Later units benefit from updated calibration and GPF integration. Using correct oil (Audi Longlife-04/LL17 FE+) and adhering to 10,000–15,000 km service intervals significantly improves longevity. Avoid low-octane fuel and frequent short trips to preserve GPF function.
Primary issues include high-pressure fuel pump wear, GPF clogging from short trips, intermittent timing chain rattle on cold start, and EGR cooler leaks. These are documented in Audi service bulletins, particularly SIB 01 17 25. Carbon buildup is reduced by dual injection, but EGR and intake cleaning remains necessary for optimal performance.
The CZHA 1.8 TFSI (190 PS) was used in the B9-generation A4 (2016–2021), B9 A5 (2017–2020), and 8W Q5 (2017–2021) as the 40 TFSI variant. It replaced the earlier EA888 Gen 3A and was succeeded by updated Gen 3B engines with full Euro 6d compliance. All models are petrol-only with longitudinal mounting.
Aftermarket ECU tuning is common on the CZHA 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.
In combined driving, the CZHA achieves approximately 6.5–7.2 L/100km (44–39 mpg UK). Highway efficiency is better (~5.8 L/100km), while city driving may exceed 8.0 L/100km. Real-world consumption depends on driving style and GPF regeneration frequency. Expect 35–45 mpg (UK) in mixed conditions for a well-maintained unit.
Yes, the CZHA is an interference engine. If the timing chain fails or jumps, pistons will contact open valves, causing severe internal damage. However, the chain is designed for the engine's lifetime under proper maintenance. Persistent cold-start rattle should be investigated to prevent escalation.
Audi specifies 5W-40 Longlife-04 or 5W-30 LL17 FE+ synthetic oil. Change intervals should not exceed 15,000 km or 1 year. Proper oil ensures turbo bearing life, HPFP lubrication, and timing chain tensioner function. Always use VW 502 00/505 00 or Audi-approved equivalent oils to maintain component longevity.
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