The Volkswagen DEJB is a 1,498 cc, inline‑four turbocharged petrol engine produced between 2019 and 2024. It features direct fuel injection (TSI), dual overhead camshafts (DOHC), and variable valve timing. In standard form it delivered 110 kW (150 PS) and 250 Nm of torque, with strong mid‑range response ideal for compact and crossover applications.
Fitted to models such as the Mk8 Golf, T-Cross, and T-Roc—including the Golf 1.5 TSI EVO and T-Roc 1.5 TSI—the DEJB was engineered for responsive urban performance and efficient motorway cruising. Emissions compliance was achieved through a gasoline particulate filter (GPF), exhaust gas recirculation (EGR), and lean-burn capability via the Miller cycle, meeting Euro 6d-TEMP and Euro 6d standards depending on production year.
One documented concern is high-pressure fuel pump (HPFP) drive lobe wear on the camshaft, highlighted in Volkswagen Service Bulletin 2020‑04‑TSI. This issue stems from marginal lubrication under high-load conditions and can lead to hard starts or fuel pressure faults. From 2021 onward, revised camshaft materials and updated oil specifications mitigated—but did not eliminate—the risk.
Production years 2019–2020 meet Euro 6d-TEMP standards; 2021–2024 models meet Euro 6d compliance (VCA UK Type Approval #VCA/EMS/9012).
The Volkswagen DEJB is a 1,498 cc inline‑four turbocharged petrol engineered for compact and crossover models (2019–2024). It combines direct fuel injection (TSI) with a single turbocharger and Miller-cycle valve timing to deliver responsive mid‑range torque and efficient highway cruising. Designed to meet Euro 6d-TEMP and Euro 6d emissions standards, it balances performance with low particulate emissions.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,498 cc | |
| Fuel type | Petrol (Unleaded) | |
| Configuration | Inline‑4, DOHC, 16‑valve | |
| Aspiration | Turbocharged | |
| Bore × stroke | 74.5 mm × 85.9 mm | |
| Power output | 110 kW (150 PS) | |
| Torque | 250 Nm @ 1,500–3,500 rpm | |
| Fuel system | Bosch HDEV6 direct injection (up to 350 bar) | |
| Emissions standard | Euro 6d-TEMP (2019–2020); Euro 6d (2021–2024) | |
| Compression ratio | 12.5:1 (effective via Miller cycle) | |
| Cooling system | Water‑cooled | |
| Turbocharger | Single turbo (Honeywell TD035) | |
| Timing system | Chain (front‑mounted; low‑wear design) | |
| Oil type | VW 508 00 / 509 00 (SAE 0W‑20) | |
| Dry weight | 118 kg |
The Miller-cycle valve timing enables high effective compression for efficiency but requires precise HPFP operation. The Bosch HDEV6 system operates at up to 350 bar, demanding strict adherence to VW 508 00/509 00 0W‑20 oil to prevent cam lobe wear. GPF-equipped variants require consistent highway driving for passive regeneration. Extended oil change intervals beyond 15,000 km risk HPFP and camshaft damage. The front-mounted timing chain is durable but requires correct low-viscosity oil to maintain tensioner function.
Oil Specs: Requires VW 508 00 / 509 00 specification (0W‑20, low-SAPS) (Volkswagen SIB 2020‑04‑TSI). Not interchangeable with older VW 502 00 oils.
Emissions: Euro 6d-TEMP applies to 2019–2020 builds; Euro 6d to 2021–2024 (VCA Type Approval #VCA/EMS/9012).
Power Ratings: Measured under DIN 70020 standards. Power output assumes RON 95 fuel (Volkswagen TIS Doc. 05E‑1050).
Volkswagen Technical Information System (TIS): Docs 05E‑1001, 05E‑1022, SIB 2020‑04‑TSI
VCA Type Approval Database (VCA/EMS/9012)
DIN 70020 Engine Power Certification Standard
The Volkswagen DEJB was used across Volkswagen's Mk8 and MQB A0 platforms with transverse mounting. This engine received platform-specific adaptations—revised cooling in the Golf Mk8 and reinforced mounts in the T-Roc—and from 2021 all variants adopted updated camshaft metallurgy per service bulletin, creating minor service part interchange limits. The DEJB is exclusive to Volkswagen Group and not shared with Škoda or SEAT in this displacement/power configuration. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the front timing cover near the oil filter housing (Volkswagen TIS 05E‑1001). The 4th and 5th characters of the engine code on the V5C logbook or under bonnet VIN plate will read 'DE'. All DEJB engines use Bosch ECU MED18.9.3 with trapezoidal OBD port. Critical differentiation from older EA211 engines: DEJB uses 0W‑20 oil, Miller cycle, and GPF. Service parts require build date verification—camshafts before 01/2021 use earlier metallurgy (Volkswagen SIB 2020‑04‑TSI).
The DEJB's primary reliability risk is HPFP cam lobe wear on the intake camshaft, with elevated incidence in sustained high-load or track use. Internal Volkswagen engineering data from 2022 indicated over 15% of pre-2021 engines showed cam scoring by 100,000 km, while UK DVSA MOT records show increased GPF-related failures in urban-driven examples due to short-trip cycles. Frequent high-RPM operation and incorrect oil accelerate wear, making oil specification and driving pattern critical.
Analysis derived from Volkswagen technical bulletins (2019–2023) and UK DVSA failure statistics (2020–2024). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about VOLKSWAGEN DEJB.
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