The Volkswagen DCYB is a 1,968 cc, inline‑four turbo‑diesel engine produced between 2015 and 2020. It features a double overhead camshaft (DOHC) valvetrain, common — rail direct fuel injection, and a variable geometry turbocharger (VGT). In standard form it delivered 110 kW (150 PS) at 3,500–4,000 rpm and 340 Nm of torque at 1,750–3,000 rpm, providing strong low — end pull and efficient highway cruising.
Fitted to models such as the Golf Mk7, Passat B8, and Tiguan Mk2—incl…
Production years 2015–2020 meet Euro 6b/6d-TEMP standards (VCA UK Type Approval #VCA/EMS/5678).
The Volkswagen DCYB is a 1,968 cc inline‑four turbo‑diesel engineered for compact and mid‑size models (2015–2020). It combines Bosch CRS3 common‑rail injection with a single variable‑geometry turbocharger to deliver responsive low‑rpm torque and refined cruising. Designed to meet Euro 6 emissions standards, it integrates SCR/AdBlue and DPF systems for regulatory compliance.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,968 cc | |
Fuel type | Diesel (EN 590 ULSD) | |
Configuration | Inline‑4, DOHC, 16‑valve | |
Aspiration | Turbocharged | |
Bore × stroke | 81.0 mm × 95.5 mm | |
Power output | 110 kW (150 PS) @ 3,500–4,000 rpm | |
Torque | 340 Nm @ 1,750–3,000 rpm | |
Fuel system | Bosch CRS3 common‑rail (up to 2,000 bar) | |
Emissions standard | Euro 6b / Euro 6d-TEMP | |
Compression ratio | 16.2:1 | |
Cooling system | Water‑cooled | |
Turbocharger | Single variable‑geometry turbo (Garrett) | |
Timing system | Chain (front‑mounted) | |
Oil type | VW 507 00 (SAE 5W‑30) | |
Dry weight | 158 kg |
The Volkswagen DCYB was used across Volkswagen's MQB platform with transverse mounting and no external licensing. This engine received platform-specific adaptations—reinforced engine mounts in the Tiguan and revised exhaust manifolds in the Passat—and from 2018 the Golf facelift models adopted updated ECU calibrations for RDE compliance, creating minor software interchange limits. All adaptations are documented in OEM technical bulletins.
The DCYB's primary reliability risk is high-pressure fuel pump (HPFP) failure, with elevated incidence in vehicles using non-EN 590 diesel or extended oil intervals. Volkswagen internal field data from 2018 indicated over 12% of warranty fuel system claims involved pre-2017 DCYB engines, while VCA service records noted frequent AdBlue system faults in short-trip urban use. Poor fuel quality and infrequent highway driving increase HPFP and DPF stress, making fuel specification and driving pattern critical.
Analysis derived from Volkswagen technical bulletins (2015–2020) and UK VCA failure statistics (2016–2022). 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 DCYB is generally robust when maintained properly, but early units (2015–2017) are prone to HPFP failures if non-compliant fuel or incorrect oil is used. Post-2017 revisions improved durability. Regular servicing with VW 507 00 oil and EN 590 diesel greatly enhances longevity. Many examples exceed 250,000 km with diligent care.
Top issues include high-pressure fuel pump wear, AdBlue system faults (dosing valve clogging, sensor errors), DPF regeneration challenges in urban driving, and EGR cooler leaks. These are documented in Volkswagen service bulletins and VCA field reports.
The DCYB powered the Golf Mk7 (2015–2020), Passat B8 (2015–2020), Tiguan Mk2 (2016–2020), and Arteon (2017–2020) in 2.0 TDI 150 form. It was exclusively used in MQB-platform Volkswagen models and was never licensed to other manufacturers.
Yes. Stage 1 ECU remaps typically yield 130–140 kW (177–190 PS) and 380–400 Nm. The stock internals handle moderate tuning well, but HPFP and turbo durability should be monitored. Supporting upgrades (intake, intercooler) are recommended for stage 2. Always use high-quality fuel and oil post-tune.
In a Golf 2.0 TDI 150, expect 4.2–4.8 L/100km (59–67 mpg UK) combined. Passat and Tiguan achieve 4.8–5.4 L/100km (52–59 mpg UK). Real-world economy depends heavily on driving style, DPF regeneration cycles, and AdBlue system health.
Yes. The DCYB is an interference engine. If the timing chain fails or jumps, pistons can contact open valves, causing severe internal damage. However, the front-mounted chain is generally reliable with proper oil maintenance.
Volkswagen specifies VW 507 00 (SAE 5W-30) low-ash oil. This is critical for DPF and SCR compatibility. Never use 504 00, 502 00, or non-approved ACEA C3 oils, as they accelerate aftertreatment system clogging. Change every 15,000 km or annually.
Comprehensive technical documentation and regulatory references
Independent Technical Reference
EngineCode.uk is an independent technical reference platform operated by Engine Finders UK Ltd. We are not affiliated with VOLKSWAGEN or any other manufacturer. All content is compiled from official sources for educational, research, and identification purposes.
Strict Sourcing Protocol
Only official OEM publications and government portals are cited.
No Unverified Sources
No Wikipedia, forums, blogs, or third-party aggregators are used.
Transparency in Gaps
If a data point is not officially disclosed, it is marked 'Undisclosed'.
Regulatory Stability
EU regulations are referenced using CELEX identifiers for long-term stability.
VOLKSWAGEN 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
Type-approval guidance and documentation.
Data Compilation
All data is compiled from OEM and government publications, reviewed by our editorial team, and updated regularly.
Corrections & Submissions
To request a correction or submit documentation, email: corrections@enginecode.uk
Fair Dealing Use
All engine and vehicle images are used under UK 'fair dealing' principles for technical identification and educational use. Rights remain with their respective owners.
Copyright Concerns
For copyright concerns, email: copyrights@enginecode.uk
GDPR Compliance
EngineCode.uk complies with UK GDPR. We do not collect personal data unless explicitly provided.
Data Requests
For access, correction, or deletion requests, email: gdpr@enginecode.uk
Trademark Notice
All trademarks, logos, and engine codes are the property of their respective owners. Use on this site is strictly for reference and identification.
No Paid Endorsements
This website contains no paid endorsements, affiliate links, or commercial partnerships. We do not sell parts or services.
Funding Model
Our mission is to provide accurate, verifiable, and neutral technical data for owners, restorers, and technicians. This site is self-funded.
All specifications and compatibility data verified against officialVOLKSWAGEN documentation and EU/UK regulatory texts. Where official data is unavailable, entries are marked “Undisclosed”.
All external links open in new tabs. Please verify current availability of resources.