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, includi…
All production years (2020–2023) comply with Euro 6d emissions standards .
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 | Refer to vehicle handbook / manufacturer specification | |
Dry weight | 102 kg |
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.
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Field reports and technical service bulletins highlight component wear patterns under high-load operation. Adherence to manufacturer service intervals and approved fluid specifications is critical for long-term reliability.
Analysis derived from manufacturer technical service bulletins and industry workshop records. Repair procedures should follow manufacturer guidelines.
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The B15SFT offers strong performance and low CO₂, but early models (2020–2021) are prone to camshaft lobe wear driving the HPFP and GPF issues. Mid-2022 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 B15SFT powered the Astra K (2020–2023), Corsa F (2020–2023), and Crossland (2020–2023) in 1.5 Turbo 150/156 variants. It is mechanically identical to the Stellantis EB3DTA engine used in Peugeot 2008 and Citroën C3 Aircross from the same era.
Aftermarket ECU tuning is common on the B-15-SFT platform, but increasing boost or altering engine parameters accelerates component wear, impacts emissions compliance, and may void vehicle warranties. Any modifications should be evaluated carefully by a qualified specialist.
Excellent for its class. In an Astra 1.5 Turbo 150, expect ~6.1 L/100km (city) and ~4.4 L/100km (highway), or ~51 mpg UK combined. Real-world mixed driving typically returns 45–49 mpg (UK) with conservative use and regular highway segments.
Yes. The B15SFT 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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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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