The Vauxhall B14NEH is a 1,399 cc, inline‑three turbo‑petrol engine produced between 2020 and 2024. It features direct fuel injection, a single twin — scroll turbocharger, and dual overhead camshafts (DOHC). In standard form it delivers 107 kW (145 PS) and 235 Nm of torque, providing responsive low‑rpm performance and efficient urban drivability.
Fitted to models such as the Corsa F, Crossland, and Grandland, including the 1.4 Turbo 145 variants, the B14NEH was enginee…
All production years (2020–2024) meet Euro 6d standards (VCA UK Type Approval #VCA/EMS/9245).
The Vauxhall B14NEH is a 1,399 cc inline‑three turbo‑petrol engineered for subcompact and compact SUV platforms (2020–2024). It combines Bosch HDEV6 direct injection with a twin-scroll turbocharger to deliver strong low-end torque and smooth operation. Designed to meet Euro 6d emissions standards, it balances urban agility with regulatory compliance and fuel efficiency.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,399 cc | |
Fuel type | Petrol | |
Configuration | Inline‑3, DOHC, 12‑valve | |
Aspiration | Turbocharged | |
Bore × stroke | 74.0 mm × 81.3 mm | |
Power output | 107 kW (145 PS) | |
Torque | 235 Nm @ 1,750–4,000 rpm | |
Fuel system | Bosch HDEV6 direct injection (up to 350 bar) | |
Emissions standard | Euro 6d | |
Compression ratio | 10.0:1 | |
Cooling system | Water‑cooled | |
Turbocharger | Single twin-scroll turbo (Honeywell) | |
Timing system | Chain (front‑mounted) | |
Oil type | GM dexos1 Gen 3 (SAE 0W‑20) | |
Dry weight | 105 kg |
The Vauxhall B14NEH was used across Vauxhall's Corsa F, Crossland, and Grandland platforms with transverse mounting and shared with Peugeot and Citroën under Stellantis collaboration. This engine received platform-specific adaptations—revised engine mounts in the Grandland and modified exhaust manifolds in the Corsa F—and from 2022 the HPFP and camshaft updates improved reliability, creating minor service part interchange limits. All adaptations are documented in OEM technical bulletins.
The B14NEH's primary reliability risk is high-pressure fuel pump cam lobe wear in pre-2022 builds under sustained high-load conditions. Vauxhall internal data from 2023 indicated a measurable rate of HPFP-related failures before 80,000 km in engines operated with non-compliant oil or aggressive driving. UK DVSA records show minimal GPF-related MOT failures, confirming robust aftertreatment durability. Extended oil intervals and poor-quality petrol increase injector and turbo stress, making oil specification and fuel quality critical.
Analysis derived from Vauxhall technical bulletins (2021–2024) and UK DVSA failure statistics (2022–2023). 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 B14NEH offers strong torque and excellent fuel economy, but early models (2020–2021) had HPFP cam lobe wear concerns under aggressive driving. Post-2022 revisions improved durability. With regular oil changes using GM dexos1 Gen 3 and moderate driving, well-maintained examples can exceed 180,000 km reliably.
Top issues include high-pressure fuel pump cam lobe wear in pre-2022 engines, GPF clogging from short trips, turbo wastegate rattle, and intake valve carbon buildup. These are documented in Vauxhall SIB 21-063 and TIS procedures. Most are preventable with proper oil, fuel, and driving habits.
The 1.4 Turbo 145 (B14NEH) powered the Corsa F (2020–2024), Crossland (2020–2023), and Grandland (2020–2024). It was also used in Opel equivalents and shared architecture with Peugeot/Citroën 1.2 PureTech 130 under the Stellantis alliance.
Yes. Stage 1 ECU remaps typically yield +15–20 kW (20–27 PS) safely, as the internals handle moderate torque increases. However, the direct injection system and GPF are sensitive—any tuning must include high-quality fuel, correct oil, and GPF monitoring to avoid damage.
Excellent for its class. In a Corsa F 1.4 Turbo, expect ~5.3 L/100km combined (53 mpg UK). Highway driving can achieve ~4.5 L/100km (63 mpg UK), while city use may rise to ~6.6 L/100km (43 mpg UK), depending on traffic and driving style.
Yes. The B14NEH is an interference engine. If the timing chain fails or jumps, piston-to-valve contact can cause catastrophic damage. However, the front-mounted chain is generally robust if serviced correctly with proper oil.
Vauxhall specifies GM dexos1 Gen 3 0W-20 synthetic oil. This low-SAPS formulation is critical for protecting the HPFP cam lobe, turbo, and GPF. Oil changes every 15,000 km (or annually) are essential—extended intervals risk pump wear and aftertreatment damage.
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
Type-approval guidance and documentation.
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