The Vauxhall B15SFT is a 1,490 cc, inline‑three turbocharged petrol engine produced between 2020 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, including the 1.5 Turbo variants, the B15SFT was engineered for compact vehicle applications with emphasis on CO₂ reduction, refinement, and Euro 6d compliance. Emissions control is achieved through a gasoline particulate filter (GPF), cooled exhaust gas recirculation (EGR), and a three-way catalytic converter, enabling full Euro 6d-TEMP and Euro 6d certification.
One documented concern is high-pressure fuel pump (HPFP) drive wear on the intake camshaft lobe, which can cause fuel pressure instability and misfires. This issue is referenced in Vauxhall Technical Service Bulletin TSB-20-09-22, noting that extended oil change intervals or incorrect oil viscosity accelerate cam lobe wear. From mid-2022, revised camshaft and HPFP materials were introduced to improve durability.
All production years (2020–2023) comply with Euro 6d emissions standards (VCA UK Type Approval #VCA/EMS/9012).
The Vauxhall B15SFT is a 1,490 cc inline‑three turbocharged petrol engine engineered for compact hatchbacks and SUVs (2020–2023). 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 | 1,490 cc | |
| Fuel type | Petrol | |
| Configuration | Inline‑3, DOHC, 12‑valve | |
| Aspiration | Turbocharged | |
| Bore × stroke | 77.0 mm × 80.0 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 | 102 kg |
The compact three-cylinder layout delivers agile response and low CO₂ output but requires strict adherence to 15,000 km oil change intervals using DEXOS2 0W-20 to protect the HPFP drive lobe and turbo bearings. Direct injection lacks fuel-wash over intake valves, making them prone to coking under short-trip conditions. From mid-2022, revised camshaft lobes and HPFP drive pins per TSB-20-09-22 help mitigate wear. The GPF demands regular highway driving (>20 min at >60 km/h) to enable passive regeneration and prevent backpressure faults.
Oil Specs: Requires DEXOS2 0W‑20 specification (Vauxhall TSB-20-09-22). Not interchangeable with older 5W formulations.
Emissions: Euro 6d certification applies to all model years (2020–2023) (VCA Type Approval #VCA/EMS/9012).
Power Ratings: Measured under SAE J1349 standards. Requires RON 95 petrol (Vauxhall TIS Doc. V44500).
Vauxhall Technical Information System (TIS): Docs V44100, V44180, TSB-20-09-22
VCA Type Approval Database (VCA/EMS/9012)
SAE International: J1349 Engine Power Certification Standards
The Vauxhall B15SFT was used across Vauxhall's Astra K, Corsa F, and Crossland platforms with transverse mounting and shared extensively with Stellantis (Peugeot 2008, Citroën C3 Aircross). This engine received platform-specific calibrations—revised engine mounts in the Astra and acoustic covers in the Corsa—and from mid-2022 the camshaft and HPFP updates created minor interchange limits for fuel system compatibility. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the front face of the cylinder block near the timing cover (Vauxhall TIS V44120). The 7th VIN digit indicates engine family ('S' for B15SFT series). All B15SFT units feature a black plastic cam cover with "1.5 Turbo" badge and integrated GPF in the exhaust manifold. Critical differentiation from B15SFL: B15SFT uses direct injection and GPF, whereas B15SFL is port-injected without particulate filter. Service parts for camshaft/HPFP require production date verification—pre-07/2022 units need TSB-20-09-22 material upgrade.
The B15SFT'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 (2023) indicated a notable share of pre-2022 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.
Find answers to most commonly asked questions about VAUXHALL B-15-SFT.
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Regulation (EC) No 715/2007
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