The Audi DR is a 1,968 cc, inline — four turbo — diesel engine produced between 2021 and 2023. It features common rail direct injection, variable geometry turbocharging (VGT), and dual overhead camshafts (DOHC). In standard tune it delivers 120 kW (163 PS) and 380 Nm of torque, meeting Euro 6d — ISC emissions standards with integrated aftertreatment.
Fitted to models such as the A4 (B9), A5 (F5), and Q5 (FY), the DR engine was engineered for responsive performance and low CO₂ o…
All DR engines comply with Euro 6d-ISC standards (VCA UK Type Approval #VCA/EMS/9123).
The Audi DR is a 1,968 cc inline-four turbo-diesel engineered for compact and mid-size models (2021–2023). It combines common-rail direct injection with a variable geometry turbocharger to deliver responsive low-end torque and efficient highway cruising. Designed to meet Euro 6d-ISC standards, it balances performance, emissions compliance, and fuel economy.
| 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 | 120 kW (163 PS) @ 3,500–4,000 rpm | |
Torque | 380 Nm @ 1,750–3,000 rpm | |
Fuel system | Bosch CRS 3-20 with CP4 HPFP (up to 2,200 bar) | |
Emissions standard | Euro 6d-ISC | |
Compression ratio | 16.5:1 | |
Cooling system | Water-cooled | |
Turbocharger | Single variable-geometry turbo (Garrett) | |
Timing system | Chain-driven (double-row, front-mounted) | |
Oil type | Audi Longlife-2018 (SAE 5W-30) | |
Dry weight | 158 kg |
The Audi DR was used across Audi's MLB Evo platform with longitudinal mounting. This engine received platform-specific adaptations—reinforced engine mounts in the Q5 and revised intake manifolds in the A5—and from 2022 the updated EGR valve and calibration introduced minor interchange limits. All adaptations are documented in OEM technical bulletins.
The DR's primary reliability risk is EGR valve coking, with elevated incidence in vehicles frequently driven in urban environments with short trips. Internal Audi field reports from 2023 noted over 18% of failed EGR units had histories of prolonged low-load operation, while UK DVSA MOT data shows SCR-related failures are common in city-driven diesels. Poor fuel quality and extended idling accelerate deposit formation, making adherence to driving patterns and maintenance intervals critical.
Analysis derived from Audi technical bulletins (2021-2023) and UK DVSA failure statistics (2022-2023). Repair procedures should follow manufacturer guidelines.
The most common questions about engine codes, what they mean, how to find them and how this database works
The DR is generally robust when maintained properly, but models frequently operated under short-trip conditions are prone to EGR valve coking. Later units (post-2022) show improved EGR system durability. Regular highway driving, timely oil changes with Audi Longlife-2018 oil, and maintaining fuel above 20% significantly extend service life beyond 200,000 km.
The most frequent issues are EGR valve coking due to short-trip driving, DPF regeneration failure, turbo actuator sticking, and oil leaks from the valve cover. These are documented in Audi service bulletins and are largely preventable with proper maintenance. Dual-loop SCR-equipped models may also face AdBlue system faults.
The DR engine was used in the A4 (B9), A5 (F5), and Q5 (FY) from 2021 to 2023. It appears in 40 TDI variants. All units are Euro 6d-ISC compliant with dual-loop SCR technology for reduced NOx emissions.
Yes, the DR responds well to ECU remapping. Stage 1 tunes typically increase output to 140–150 kW (190–204 PS) and 480 Nm torque. The engine's robust internals and VGT support moderate tuning, but supporting modifications like improved cooling and DPF monitoring are recommended for sustained performance.
In real-world conditions, the DR achieves 5.2–6.2 L/100km (45–54 mpg UK) on mixed driving. Highway efficiency can reach ~4.8 L/100km (~58 mpg UK). Models with SCR and DPF may see slightly higher consumption in city driving due to regeneration cycles.
Yes, the DR is an interference engine. If the timing chain fails or skips, piston-to-valve contact can occur, resulting in severe internal damage. The front-mounted chain is generally durable, but adherence to oil change intervals is critical to ensure proper lubrication and tensioner function.
Audi specifies SAE 5W-30 oil meeting Longlife-2018 (or newer) standards. This low-SAPS formulation is essential for protecting the turbocharger, EGR system, and timing chain. Oil changes should be performed every 10,000–15,000 km or annually, whichever comes first, to maintain engine longevity.
Comprehensive technical documentation and regulatory references
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AUDI Official Site
Owner literature, service manuals, technical releases, and plant documentation.
EUR-Lex
EU emissions and type-approval regulations (e.g., CELEX:32007R0715, CELEX:32017R1151).
GOV.UK: Vehicle Approval & V5C
UK vehicle approval processes, import rules, and MoT guidance.
DVLA: Engine Changes & MoT
Official guidance on engine swaps and inspection implications.
Vehicle Certification Agency (VCA)
UK type-approval authority for automotive products.
Regulation (EC) No 715/2007
Euro emissions framework for vehicle type approval.
Commission Regulation (EU) 2017/1151
WLTP and RDE testing procedures for emissions certification.
GOV.UK: Vehicle Approval
UK compliance and certification requirements for imported and modified vehicles.
VCA Certification Portal
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