The Vauxhall B14XFT is a 1,399 cc, inline‑four turbocharged petrol engine produced between 2013 and 2018. It features direct fuel injection, dual overhead camshafts (DOHC), and variable valve timing on both intake and exhaust camshafts. In standard form it delivered 103 kW (140 PS) with 200 Nm of torque, engineered for responsive urban performance and compact vehicle packaging.
Fitted to models such as the Corsa E, Adam, and Meriva B, the B14XFT was designed for drivers seeking sporty dynamics in a small footprint without compromising fuel economy. Emissions compliance was achieved through a close-coupled three-way catalytic converter and exhaust gas recirculation (EGR), meeting Euro 5 and Euro 6 standards depending on model year and market.
One documented concern is carbon buildup on intake valves due to the absence of port fuel injection, which can reduce airflow and cause misfires under load. This issue, noted in Vauxhall Technical Service Bulletin TSB-16-03-22, is common to many direct-injection petrol engines. From 2016 onward, revised engine management calibrations were introduced to mitigate deposit formation through optimized injection strategies.
Production years 2013–2015 meet Euro 5 standards; 2016–2018 models comply with Euro 6 depending on market (VCA UK Type Approval #VCA/EMS/4567).
The Vauxhall B14XFT is a 1,399 cc inline‑four turbocharged petrol engine engineered for compact hatchbacks and MPVs (2013–2018). It combines direct injection with a single twin-scroll turbocharger to deliver strong low-end torque and linear power delivery. Designed to meet Euro 5 and Euro 6 emissions standards, it balances sporty responsiveness with regulatory compliance.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,399 cc | |
| Fuel type | Petrol | |
| Configuration | Inline‑4, DOHC, 16‑valve | |
| Aspiration | Turbocharged | |
| Bore × stroke | 74.0 mm × 81.3 mm | |
| Power output | 103 kW (140 PS) | |
| Torque | 200 Nm @ 1,850–4,000 rpm | |
| Fuel system | Direct injection (up to 200 bar) | |
| Emissions standard | Euro 5 (2013–2015); Euro 6 (2016–2018) | |
| Compression ratio | 10.0:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | Single twin‑scroll turbo (BorgWarner) | |
| Timing system | Chain (front‑mounted) | |
| Oil type | GM dexos1 Gen 2 (SAE 5W‑30) | |
| Dry weight | 118 kg |
The twin-scroll turbo provides strong low-RPM response ideal for city and motorway use but requires strict adherence to 15,000 km oil change intervals using GM dexos1 Gen 2 oil to protect turbo bearings and timing chain. Direct injection leads to intake valve carbon buildup over time; periodic induction cleaning is recommended after 80,000 km. EGR systems are sensitive to short-trip driving—regular highway runs help maintain valve cleanliness. Post-2016 engines include updated ECU maps per TSB-16-03-22 to reduce deposit formation.
Oil Specs: Requires GM dexos1 Gen 2 (5W-30) specification (Vauxhall TSB-16-03-22). Meets ACEA A5/B5 but includes OEM-specific LSPI protection.
Emissions: Euro 5 certification applies to 2013–2015 models only (VCA Type Approval #VCA/EMS/4567). 2016–2018 models meet Euro 6 in all EU markets.
Power Ratings: Measured under SAE J1349 standards. Power output assumes RON 95 petrol with ≤10 ppm sulfur (Vauxhall TIS Doc. V85150).
Vauxhall Technical Information System (TIS): Docs V85130, V85135, V85140, TSB-16-03-22
VCA Type Approval Database (VCA/EMS/4567)
SAE International: J1349 Engine Power Certification Standards
The Vauxhall B14XFT was used across Vauxhall's Corsa E/Adam platforms with transverse mounting. This engine received platform-specific adaptations—reinforced mounts in the Meriva B and revised cooling ducts in the Adam S—and from 2016 the Euro 6-compliant variants adopted updated ECU calibrations and EGR hardware, creating interchange limits. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the front timing cover near the crank pulley (Vauxhall TIS V85155). The 7th VIN digit indicates engine family ('F' for 1.4 turbo petrol series). Pre-2016 models use a silver cam cover with round diagnostic port; post-2016 Euro 6 units have black cam covers and updated ECU with trapezoidal OBD port. Critical differentiation from B14XEL: B14XFT is turbocharged with DOHC; B14XEL is naturally aspirated SOHC. ECU and turbo assemblies are not interchangeable across model years due to EGR and calibration differences.
The B14XFT's primary reliability risk is carbon buildup on intake valves due to direct-only fuel injection, with elevated incidence in high-mileage or urban-driven vehicles. Vauxhall internal data from 2017 indicated a measurable increase in induction-related service visits after 70,000 km, while UK DVSA records show EGR-related warning lights in vehicles with predominantly short-trip usage. Extended oil intervals and low-quality petrol accelerate deposit formation, making oil specification and fuel quality critical.
Analysis derived from Vauxhall technical bulletins (2016–2018) and UK DVSA failure statistics (2016–2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about VAUXHALL B-14-XFT.
Comprehensive technical documentation and regulatory references
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VAUXHALL Official Site
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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)
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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