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, the CZHA was engineered for responsive mid-range performance and smooth refinement in daily driving. It meets Euro 6b emissions standards through a combination of exhaust gas recirculation (EGR), a gasoline particulate filter (GPF), and advanced engine management calibration. This allows compliance across European markets without requiring selective catalytic reduction (SCR) systems.
One documented concern is high-pressure fuel pump (HPFP) wear under sustained high-load conditions, highlighted in Audi Service Bulletin 01 17 25. Premature wear can lead to fuel pressure instability and misfire DTCs. From 2019, revised pump calibration and updated injector sealing protocols were implemented to improve durability.
Production years 2016–2018 meet Euro 6b standards; 2019–2021 models comply with Euro 6d-TEMP (VCA UK Type Approval #VCA/AUD/88832).
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 | Audi Longlife-04 (SAE 5W-40) or 5W-30 LL17 FE+ | |
| Dry weight | 142 kg |
The dual-injection system provides strong low-end response and reduced carbon buildup on intake valves, but demands precise fuel quality (RON 95 minimum). Regular oil changes (10,000–15,000 km) using Audi Longlife-04 or LL17 FE+ are essential to maintain turbo and chain longevity. The gasoline particulate filter (GPF) requires full regeneration cycles; frequent short trips may lead to clogging and DPF-related fault codes. HPFP wear is documented in high-load applications; post-2019 models benefit from revised calibration per Audi SIB 01 17 25. Avoid extended idling to preserve EGR cooler efficiency.
Oil Specs: Requires Audi Longlife-04 (5W-40) or LL17 FE+ (5W-30) specification (Audi SIB 01 17 25). ACEA C3 compliance required.
Emissions: Euro 6b applies to 2016–2018 models (VCA #VCA/AUD/88832). Euro 6d-TEMP introduced in 2019 for real-world driving emissions (RDE) compliance.
Power Ratings: Measured under ECE R85 standards. 140 kW output requires RON 95 fuel (Audi TIS A888-3B).
Audi Technical Information System (TIS): Docs A888-3B, SIB 01 17 25
VCA Type Approval Database (VCA/AUD/88832)
European Regulation (EC) No 715/2007
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.
Locate the engine code stamped on the front of the cylinder block, near the timing cover (Audi TIS A888-3B). The 8th VIN digit identifies engine type ('D' for CZHA in B9 chassis). Pre-2019 models lack underfloor GPF; post-2019 units include underfloor-mounted filter. Critical differentiation from EA888 Gen 3A: CZHA features dual injection and electric wastegate actuation. Service parts require model-year verification—HPFP and ECU calibration differ between Euro 6b and 6d-TEMP variants (Audi SIB 01 17 25).
The CZHA's primary reliability risk is high-pressure fuel pump wear under sustained load, with elevated incidence in mixed urban/highway use. Internal Audi field reports from 2020 noted a subset of pre-2019 units requiring HPFP replacement before 120,000 km, while UK DVSA data shows GPF-related faults increasing in vehicles with frequent short trips. Extended oil intervals and low-octane fuel exacerbate component stress, making fuel quality and maintenance adherence critical.
Analysis derived from Audi technical bulletins (2016-2021) and UK DVSA failure statistics (2018-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about AUDI CZHA.
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