The Vauxhall B14NEJ is a 1,399 cc, inline‑four turbocharged petrol engine produced between 2019 and 2023. Developed under Stellantis’ PureTech family, it features direct fuel injection, a single — scroll turbocharger, and dual overhead camshafts (DOHC). In standard form it delivers 110–115 kW (150–156 PS) with peak torque of 240–260 Nm, offering brisk low — end response and strong urban drivability.
Fitted to models such as the Astra K, Corsa F, and Crossland, includin…
All production years (2019–2023) comply with Euro 6d emissions standards (VCA UK Type Approval #VCA/EMS/8915).
The Vauxhall B14NEJ is a 1,399 cc inline‑four turbocharged petrol engine engineered for compact hatchbacks and SUVs (2019–2023). It combines direct fuel injection with a single-scroll turbocharger to deliver responsive low-end torque and class-leading CO₂ figures. Designed to meet Euro 6d emissions standards, it integrates a gasoline particulate filter (GPF) and cooled EGR for full regulatory compliance.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,399 cc | |
Fuel type | Petrol | |
Configuration | Inline‑4, DOHC, 16‑valve | |
Aspiration | Turbocharged | |
Bore × stroke | 77.0 mm × 75.0 mm | |
Power output | 110–115 kW (150–156 PS) | |
Torque | 240–260 Nm @ 1,650 rpm | |
Fuel system | Direct injection (Bosch HDEV6, up to 350 bar) | |
Emissions standard | Euro 6d | |
Compression ratio | 10.2:1 | |
Cooling system | Water‑cooled | |
Turbocharger | Single-scroll turbo (Honeywell) | |
Timing system | Chain (front‑mounted) | |
Oil type | DEXOS2 0W‑20 | |
Dry weight | 112 kg |
The Vauxhall B14NEJ was used across Vauxhall's Astra K, Corsa F, and Crossland platforms with transverse mounting and shared extensively with Stellantis (Peugeot 308, Citroën C4). This engine received platform-specific calibrations—revised engine mounts in the Astra and acoustic covers in the Corsa—and from mid-2021 the camshaft and HPFP updates created minor interchange limits for fuel system compatibility. All adaptations are documented in OEM technical bulletins.
The B14NEJ's primary reliability risk is intake camshaft lobe wear driving the high-pressure fuel pump, with elevated incidence in vehicles subjected to extended oil change intervals. Vauxhall internal data (2022) indicated a notable share of pre-2021 engines required camshaft replacement before 80,000 km, while UK DVSA MOT records show GPF-related warnings rising in high-idle applications. Infrequent highway driving and delayed oil changes increase stress on the GPF and HPFP, making adherence to DEXOS2 oil and service intervals critical.
Analysis derived from Vauxhall technical bulletins (2020–2023) and UK DVSA failure statistics (2020–2023). 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 B14NEJ offers strong performance and low CO₂, but early models (2019–2020) are prone to camshaft lobe wear driving the HPFP and GPF issues. Mid-2021 revisions improved durability. Longevity depends heavily on using DEXOS2 0W-20 oil, RON 95 petrol, and adhering to 15,000 km service intervals with regular highway driving.
Top issues include intake cam lobe wear (affecting HPFP), GPF regeneration faults, intake valve coking, and turbo actuator failure. These are documented in Vauxhall TSBs and DVSA MOT data. Regular oil changes, correct fuel/oil, and highway driving greatly reduce risk.
The B14NEJ powered the Astra K (2019–2023), Corsa F (2019–2023), and Crossland (2019–2023) in 1.4 Turbo 150/156 variants. It is mechanically identical to the Stellantis EB2DTB engine used in Peugeot 308 and Citroën C4 from the same era.
Yes. Stage 1 ECU remaps typically yield +10–15 kW safely, as the internals handle moderate torque increases. However, the HPFP drive lobe and GPF are weak points—any tuning should include a high-flow fuel filter and ensure GPF functionality remains intact to avoid emissions faults.
Excellent for its class. In an Astra 1.4 Turbo 150, expect ~6.0 L/100km (city) and ~4.3 L/100km (highway), or ~52 mpg UK combined. Real-world mixed driving typically returns 46–50 mpg (UK) with conservative use and regular highway segments.
Yes. The B14NEJ is an interference design. If the timing chain fails (rare but possible), piston-to-valve contact can cause catastrophic damage. However, the front-mounted chain is generally robust with proper oil maintenance.
Vauxhall specifies DEXOS2 0W-20 synthetic oil. This is mandatory for HPFP drive lobe protection, turbo bearing lubrication, and GPF compatibility. Change every 15,000 km or annually—whichever comes first—to prevent wear and carbon buildup.
Comprehensive technical documentation and regulatory references
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VAUXHALL 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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