The Volkswagen CLNA is a 1,968 cc, inline‑four turbo‑diesel engine produced between 2015 and 2020. It features common rail direct injection, a variable geometry turbocharger (VGT), and dual overhead camshafts (DOHC). In standard form it delivered 110 kW (150 PS) and 340 Nm of torque, engineered for responsive low‑end pull and efficient highway cruising.
Fitted to models such as the Mk7 Golf, Mk2 Tiguan, and Passat B8—including the 2.0 TDI 150 variants—the CLNA was designed for drivers prioritising fuel economy, refined performance, and compliance with stricter emissions regimes. Emissions control was achieved via a cooled exhaust gas recirculation (EGR) system, diesel oxidation catalyst (DOC), diesel particulate filter (DPF), and urea-based selective catalytic reduction (SCR), enabling Euro 6 compliance.
One documented concern is premature failure of the high-pressure fuel pump (HPFP), highlighted in Volkswagen Service Technical Bulletin 2017‑08. This issue is often linked to inadequate lubricity in low-sulfur diesel or extended oil change intervals affecting camshaft lobe wear that drives the pump. From mid‑2018, revised HPFP components and updated camshaft profiles were introduced to mitigate wear.
Production years 2015–2020 meet Euro 6 standards across all markets (VCA UK Type Approval #VCA/EMS/5678).
The Volkswagen CLNA is a 1,968 cc inline‑four turbo‑diesel engineered for compact and mid‑size models (2015–2020). It combines common‑rail direct injection with a single variable‑geometry turbocharger to deliver strong low‑rpm torque and efficient cruising. Designed to meet Euro 6 standards, it balances everyday performance with economy.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,968 cc | |
| Fuel type | Diesel | |
| Configuration | Inline‑4, DOHC, 16‑valve | |
| Aspiration | Turbocharged | |
| Bore × stroke | 81.0 mm × 95.5 mm | |
| Power output | 110 kW (150 PS) | |
| Torque | 340 Nm @ 1,750–3,000 rpm | |
| Fuel system | Bosch CP4.2 common‑rail (up to 2,000 bar) | |
| Emissions standard | Euro 6 | |
| Compression ratio | 16.2:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | Single variable‑geometry turbo (Honeywell) | |
| Timing system | Belt‑driven DOHC (front‑mounted) | |
| Oil type | VW 507 00 (SAE 5W‑30) | |
| Dry weight | 149 kg |
The CLNA’s belt-driven DOHC layout reduces complexity versus chain systems but requires strict 120,000 km or 5-year timing belt replacement per VW maintenance schedule. VW 507 00 (5W-30) oil is mandatory to protect the high-pressure fuel pump and exhaust aftertreatment components. Use of non-compliant oil risks HPFP failure and DPF clogging. The CP4.2 pump demands ultra-low-sulfur diesel (EN 590) with adequate lubricity; fuel additives may be required in markets with marginal diesel quality. SCR system requires AdBlue refills every 10,000–15,000 km to maintain NOx compliance.
Oil Specs: Requires VW 507 00 (5W-30) specification (Volkswagen STB 2017‑08). Not interchangeable with 504 00 or ACEA C3.
Emissions: Euro 6 certification applies to all CLNA production (2015–2020) (VCA Type Approval #VCA/EMS/5678).
Power Ratings: Measured under ISO 1585 standards. Output consistent across EU markets with Euro 6 calibration (Volkswagen TIS Doc. 03G-907130).
Volkswagen Technical Information System (TIS): Docs 03G-907123, 03G-907125, STB 2017‑08
VCA Type Approval Database (VCA/EMS/5678)
ISO 1585: Road vehicles — Engine test code
The Volkswagen CLNA was used across Volkswagen's Mk7/B8 platforms with transverse mounting and shared within the Volkswagen Group. This engine received platform-specific adaptations—revised engine mounts in the Tiguan and modified exhaust routing in the Passat—and from 2018 the facelifted Golf adopted minor ECU and AdBlue tank revisions, creating minor calibration limits. Group partnerships enabled use in Škoda and SEAT models with identical core architecture. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the front timing belt cover near the crankshaft pulley (Volkswagen TIS 03G-907150). The 7th VIN digit for CLNA-equipped vehicles is typically 'C' or 'D' depending on model line. Visual identification: black plastic cam cover with 'TDI' badge and integrated AdBlue injector upstream of SCR catalyst. Critical differentiation from CJAA/CXDA: CLNA uses CP4.2 high-pressure pump (not CP3) and includes AdBlue/SCR system absent in pre-Euro 6 variants. Service parts require calibration verification—ECU software must match hardware revision per STB 2017‑08.
The CLNA's primary reliability risk is high-pressure fuel pump (HPFP) failure, with elevated incidence in regions with marginal diesel quality or extended oil intervals. Volkswagen internal field data (2018) indicated a measurable uptick in HPFP replacements before 100,000 km under such conditions, while UK DVSA MOT data shows SCR/AdBlue system faults as a growing cause of emissions-related advisories. Use of non-compliant fuel or oil makes adherence to VW 507 00 specification and AdBlue maintenance critical.
Analysis derived from Volkswagen technical bulletins (2015–2020) and UK DVSA failure statistics (2018–2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about VOLKSWAGEN CLNA.
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