The Audi DEHA is a 1,984 cc, inline — four turbocharged petrol engine produced between 2017 and 2023. It belongs to the EA888 Gen 3B engine family, designed for transverse applications in compact and mid — size Audi models. Featuring direct fuel injection (FSI), variable valve timing (AVS), and a twin — scroll turbocharger, it delivers 140 kW (190 PS) and 320 Nm of torque, with enhanced thermal efficiency and reduced particulate emissions.
Fitted to models such as the A3 (8V)…
Production years 2017–2019 meet Euro 6c standards; 2020–2023 models comply with Euro 6d-TEMP and Euro 6d (VCA UK Type Approval #VCA/EMS/8901).
The Audi DEHA is a 1,984 cc inline-four turbocharged petrol engineered for transverse-mounted applications in compact and mid-size models (2017–2023). It combines direct fuel injection with a twin-scroll turbocharger to deliver responsive low-end torque and improved fuel economy. Designed to meet Euro 6c and Euro 6d emissions standards, it balances performance with environmental compliance.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,984 cc | |
Fuel type | Petrol (Unleaded, 95 RON min) | |
Configuration | Inline-4, DOHC, 16-valve | |
Aspiration | Turbocharged (twin-scroll) | |
Bore × stroke | 82.5 mm × 92.8 mm | |
Power output | 140 kW (190 PS) @ 4,200–6,000 rpm | |
Torque | 320 Nm @ 1,500–4,000 rpm | |
Fuel system | Bosch HDEV5 direct injection (up to 350 bar) | |
Emissions standard | Euro 6c (pre-2020), Euro 6d (2020–2023) | |
Compression ratio | 11.0:1 | |
Cooling system | Water-cooled with dual-circuit thermostat | |
Turbocharger | Single twin-scroll turbo (BorgWarner) | |
Timing system | Roller chain (two-stage tensioner) | |
Oil type | VW 508 00 / 509 00 (SAE 0W-20) | |
Dry weight | 138 kg |
The Audi DEHA was used across Audi's 8V/B9/8U platforms with transverse mounting. This engine received platform-specific adaptations-shorter intake manifolds in the A3 and revised EGR routing in the Q3-and from 2020, full Euro 6d compliance with updated NOx sensors in A4 and A5 variants created interchange limits. All adaptations are documented in OEM technical bulletins.
The DEHA's primary reliability risk is direct fuel injector coking, with elevated incidence in urban driving with frequent cold starts. Internal Audi quality reports from 2019 noted a significant number of pre-2020 units requiring injector cleaning before 90,000 km, while UK DVSA data links GPF-related faults to a notable share of emissions test failures. Short trips and poor maintenance increase carbon buildup, making regular inspection and software updates critical.
Analysis derived from Audi technical bulletins (2017-2022) and UK DVSA failure statistics (2019-2025). Repair procedures should follow manufacturer guidelines.
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The DEHA is generally reliable when maintained properly, but pre-2020 models are prone to direct injector coking. Later Euro 6d variants show improved durability. Regular oil changes with VW 508 00 oil, injector maintenance, and highway driving to support GPF regeneration significantly extend engine life beyond 200,000 km.
The most documented issues are direct injector coking, turbo actuator sticking, GPF clogging from short trips, and valve cover oil leaks. These are confirmed in Audi service bulletins and field reports. Injector and GPF issues are more prevalent in city-driven vehicles with frequent cold starts.
The DEHA was used in the A3 (8V), A4 (B9), A5 (F5), and Q3 (8U) from 2017 to 2023. It was phased out in favor of updated EA888 variants with improved emissions systems. All applications are 2.0 TFSI 190 PS, with Euro 6d compliance added from 2020 in A4 and A5 models.
Yes. The DEHA responds well to ECU remapping, typically gaining +40–60 kW safely. Stock internals handle increased torque, but supporting mods like upgraded intercoolers and exhausts improve reliability. Tuning should preserve GPF and EGR functions to avoid emissions-related faults.
Good. In an A4 2.0 TFSI (2018), combined consumption is ~6.8 L/100km (~42 mpg UK). Highway runs can achieve ~5.8 L/100km (~49 mpg UK). Real-world figures range 35–45 mpg UK depending on driving style and GPF regeneration frequency.
Yes. The DEHA is an interference engine. If the timing chain fails or jumps, piston-to-valve contact will occur, causing severe internal damage. Chain maintenance is critical—any unusual noise should prompt immediate inspection.
Audi specifies VW 508 00 or 509 00 (0W-20) low-SAPS oil. This is essential for protecting the gasoline particulate filter (GPF). Oil must be changed every 15,000 km or annually to ensure proper lubrication and minimize ash buildup in aftertreatment components.
Comprehensive technical documentation and regulatory references
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Regulation (EC) No 715/2007
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