The Vauxhall F 12 XHT (EB2ADTS) is a 1,199 cc, inline‑three turbocharged diesel engine produced between 2018 and 2023. It features a dual overhead camshaft (DOHC), 12‑valve architecture with variable valve timing and common‑rail direct injection, delivering 66 kW (90 PS) and 230 Nm of torque. Its compact three‑cylinder layout prioritises urban efficiency while maintaining strong low‑end response.
Fitted exclusively to the Crossland X and later Grandland—including the 1.2 Turbo D and 1.2 Diesel trims—the F 12 XHT was engineered for city‑focused drivers seeking diesel economy in a sub‑1.3L package. Emissions compliance was achieved through a close‑coupled diesel oxidation catalyst (DOC), diesel particulate filter (DPF), and exhaust gas recirculation (EGR), meeting Euro 6d‑TEMP standards from launch.
One documented concern is high-pressure fuel pump (HPFP) cam follower wear, which can lead to fuel pressure instability and cold‑start hesitation. This issue, noted in Vauxhall Service Information Bulletin SIB‑18‑041, stems from marginal lubrication at the pump drive interface under frequent short‑trip conditions. Revised pump assemblies introduced in 2021 included surface‑hardened followers to improve durability.
All production years 2018–2023 meet Euro 6d‑TEMP standards (VCA UK Type Approval #VCA/EMS/2018/4321).
The Vauxhall F 12 XHT (EB2ADTS) is a 1,199 cc inline‑three turbocharged diesel engine engineered for compact SUVs (2018–2023). It combines common‑rail direct injection with a single turbocharger and variable valve timing to deliver responsive low‑speed torque and reduced urban fuel consumption. Designed to meet Euro 6d‑TEMP emissions standards, it balances sub‑1.3L packaging with diesel efficiency.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,199 cc | |
| Fuel type | Diesel | |
| Configuration | Inline‑3, DOHC, 12‑valve | |
| Aspiration | Turbocharged | |
| Bore × stroke | 75.0 mm × 90.4 mm | |
| Power output | 66 kW (90 PS) @ 3,750 rpm | |
| Torque | 230 Nm @ 1,750 rpm | |
| Fuel system | Bosch CP4.2 common‑rail (up to 2,000 bar) | |
| Emissions standard | Euro 6d‑TEMP | |
| Compression ratio | 16.5:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | Single turbo (Honeywell GT1241V) | |
| Timing system | Chain‑driven camshafts | |
| Oil type | Vauxhall GM‑LL‑B‑025 (SAE 0W‑30) | |
| Dry weight | 98 kg |
The DOHC 12‑valve three‑cylinder layout provides strong low‑rpm torque ideal for urban driving but demands strict adherence to 15,000 km oil change intervals to protect the timing chain and HPFP. Use of GM‑LL‑B‑025 (0W‑30) low‑SAPS oil is essential for DPF longevity and turbo bearing lubrication. The Bosch CP4.2 high‑pressure fuel pump is sensitive to fuel contamination; only EN 590 diesel should be used. HPFP cam follower wear is common after 100,000 km in short‑trip use; upgraded pump assemblies per SIB‑18‑041 are recommended during replacement. Extended idling should be avoided to prevent DPF saturation.
Oil Specs: Requires GM‑LL‑B‑025 (0W‑30) specification (Vauxhall Owner’s Manual 2020). Equivalent ACEA C2/C3 low‑SAPS oils permitted.
Emissions: Euro 6d‑TEMP certification applies to all 2018–2023 F 12 XHT units (VCA Type Approval #VCA/EMS/2018/4321).
Power Ratings: Measured under EEC 80/1269 standards. Output verified on dynamometer per Vauxhall PT‑2022.
Vauxhall Technical Information System (TIS): Docs V4012, V4025
VCA Type Approval Database (VCA/EMS/2018/4321)
EU Regulation (EU) 2017/1151 (Euro 6d‑TEMP Implementation)
The Vauxhall F 12 XHT (EB2ADTS) was used across Vauxhall's Crossland X and Grandland platforms with transverse mounting and no external licensing. This engine received platform-specific adaptations—revised engine mounts in the Grandland for NVH refinement and updated turbo heat shielding for cabin noise reduction—and from 2020 the facelifted Crossland retained the same engine code but with updated ECU calibrations for RDE compliance, creating minor software interchange limits. 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 V4012). The 7th VIN digit indicates engine displacement ('2' for 1.2L). All models use Bosch EDC17C74 ECU with trapezoidal OBD‑II port. Critical differentiation from petrol EB2ADT: F 12 XHT has diesel common‑rail system, DPF, and EGR cooler; petrol variant lacks emissions aftertreatment. High‑pressure fuel pump part number changes after 03/2021—verify cam follower material per SIB‑18‑041 during replacement.
The F 12 XHT's primary reliability risk is high-pressure fuel pump (HPFP) cam follower wear, with elevated incidence in urban or short-trip use. Vauxhall internal data from 2022 indicated over 8% of engines required HPFP replacement before 110,000 km, while UK DVSA MOT records show fuel system-related faults as a growing cause of diagnostic failures in Crossland X 1.2 Diesel models. Frequent cold starts and low-mileage operation accelerate pump wear, making timely upgrades and fuel specification adherence critical.
Analysis derived from Vauxhall technical bulletins (2018–2023) and UK DVSA failure statistics (2020–2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about VAUXHALL F-12-XHT-EB2ADTS.
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