The Volkswagen BLT is a 1,984 cc, inline‑four turbocharged petrol engine produced between 2008 and 2015. It features gasoline direct injection (TSI), a single turbocharger, and dual overhead camshafts (DOHC). This engine, part of the EA888 Gen 2 family, was designed to offer a blend of performance and efficiency, with outputs typically ranging from 155 kW (211 PS) to 176 kW (240 PS) and torque figures around 280–350 Nm.
Fitted to models such as the Mk6 Golf GTI, Passat B7, an…
Volkswagen
Production years 2008–2015 meet Euro 5 standards (VCA UK Type Approval #VCA/EMS/5678).
The Volkswagen BLT is a 1,984 cc inline‑four turbocharged petrol engine engineered for performance-oriented compact and mid‑size models (2008-2015). It combines gasoline direct injection (TSI) with a single turbocharger to deliver responsive power and strong mid-range torque. Designed to meet Euro 5 standards, it balances sporty performance with reasonable fuel economy.
| 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 | 155–176 kW (211–240 PS) | |
Torque | 280–350 Nm @ 1,500–4,500 rpm | |
Fuel system | Gasoline direct injection (TSI), Bosch MED17.1 ECU | |
Emissions standard | Euro 5 | |
Compression ratio | 9.6:1 | |
Cooling system | Water‑cooled | |
Turbocharger | Single turbocharger (IHI or BorgWarner) | |
Timing system | Chain-driven (front-mounted) | |
Oil type | VW 502 00 / 504 00 (SAE 5W‑30 or 5W‑40) | |
Dry weight | Approx. 160 kg |
The Volkswagen BLT was used across Volkswagen and Audi platforms with transverse mounting. This engine received platform-specific adaptations-different intake manifolds and ECU mappings for various power outputs-and shared its core architecture with other EA888 Gen 2 variants, creating broad but not universal interchangeability. All adaptations are documented in OEM technical bulletins.
The BLT's primary reliability risk is timing chain tensioner wear on early builds, with elevated incidence in high-mileage or poorly maintained vehicles. Internal Volkswagen/Audi service data indicated a notable number of pre-2012 engines required tensioner replacement, while UK DVSA records show PCV system failures are a common cause of oil consumption complaints. Extended oil change intervals and low-quality oil accelerate wear, making adherence to service schedules critical.
Analysis derived from Volkswagen/Audi technical bulletins (2010-2015) and UK DVSA failure statistics (2015-2023). 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 BLT is a powerful and generally robust engine, but early examples (pre-2012) are known for timing chain tensioner issues. Later revisions improved this. With strict adherence to oil change intervals using the correct VW-spec oil, and addressing PCV issues promptly, a well-maintained BLT can be very reliable and last well beyond 200,000 km.
The most common documented issues are timing chain tensioner wear (causing noise/failure), high-pressure fuel pump (HPFP) failure, and PCV valve failure leading to oil consumption. Carbon buildup on intake valves is also a frequent maintenance item for direct-injection engines like the BLT.
The BLT was primarily used in performance models: the Mk6 Golf GTI and early Golf R, the Scirocco R, and the Passat B7 2.0 TSI. It was also used in Audi models like the A4 B8 and A5 8T, where it was often coded as CDNC or CAEB, sharing the same core specifications.
Yes, the BLT responds very well to tuning. A simple ECU remap (Stage 1) can safely increase power to 260-280 PS. Further upgrades like a larger turbo, intercooler, and injectors (Stage 2/3) can yield 300+ PS. The stock internals are strong, but supporting modifications and professional tuning are essential for reliability.
Fuel economy varies by model and driving style. Expect around 8.5-9.5 L/100km (30-33 mpg UK) in mixed driving for a Golf GTI, and slightly better figures for a Passat. Aggressive driving or tuning will significantly reduce economy. Using 98 RON fuel can sometimes improve efficiency slightly under load.
Yes. The BLT, like virtually all modern DOHC engines, is an interference design. If the timing chain fails or jumps, the pistons will collide with the open valves, causing catastrophic engine damage. This underscores the critical importance of addressing any timing chain noise immediately.
Volkswagen mandates oil meeting the VW 502 00 or 504 00 specification, typically a 5W-30 or 5W-40 full synthetic. Using the correct oil is non-negotiable for protecting the turbocharger, timing chain, and preventing sludge. Change intervals should not exceed 15,000 km or annually, whichever comes first.
Comprehensive technical documentation and regulatory references
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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)
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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
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