The Citroën PureTech 155 is a 1,199 cc, inline-three turbocharged petrol engine developed by Stellantis and produced between 2016 and 2023. It forms part of the EMP2 platform powertrain strategy, featuring direct fuel injection, a twin-scroll turbocharger, and variable valve timing. In standard tune, it delivers 115 kW (155 PS), with peak torque of 245 Nm available from 1,750 rpm, providing responsive performance for compact and mid-size vehicles.
Fitted to models such as the C3, C4, C5 Aircross, and DS 3 Crossback, the PureTech 155 was engineered for urban and mixed driving conditions, balancing agility with fuel efficiency. Emissions compliance is achieved through a close-coupled three-way catalyst and gasoline particulate filter (GPF), enabling Euro 6b and later Euro 6d-TEMP compliance depending on model year and calibration.
One documented concern is turbocharger wastegate actuator sticking, highlighted in Stellantis Technical Service Bulletin PTS-17-005. This issue arises from carbon buildup and thermal stress, leading to boost control faults and DTCs such as P0299 (underboost). From 2020, revised actuator hardware and updated ECU mapping were introduced to improve durability and reduce failure incidence across the EMP2 lineup.
Production years 2016–2018 meet Euro 6b standards; 2019–2023 models comply with Euro 6d-TEMP depending on market (VCA UK Type Approval #VCA/EMS/5678).
The Citroën PureTech 155 is a 1,199 cc inline-three turbocharged petrol engine engineered for compact and SUV platforms (2016–2023). It combines gasoline direct injection with a twin-scroll turbocharger to deliver strong mid-range torque and responsive throttle characteristics. Designed to meet Euro 6b and Euro 6d-TEMP emissions standards, it balances urban drivability with regulated efficiency.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,199 cc | |
| Fuel type | Petrol (Unleaded, 95 RON min) | |
| Configuration | Inline-3, DOHC, 12-valve | |
| Aspiration | Turbocharged | |
| Bore × stroke | 75.0 mm × 90.0 mm | |
| Power output | 115 kW (155 PS) @ 5,500 rpm | |
| Torque | 245 Nm @ 1,750–3,000 rpm | |
| Fuel system | Bosch HDEV5 direct injection (up to 200 bar) | |
| Emissions standard | Euro 6b (pre-2019); Euro 6d-TEMP (2019–2023) | |
| Compression ratio | 10.5:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | Mitsubishi MHK12 twin-scroll turbo with vacuum-actuated wastegate | |
| Timing system | Timing chain (single-row, non-interference design) | |
| Oil type | SP 5W-30 (Stellantis B71 2290) | |
| Dry weight | 108 kg |
The twin-scroll turbo provides strong mid-range torque ideal for city driving but requires adherence to 15,000 km oil change intervals to prevent turbo bearing wear and GPF clogging. SP 5W-30 oil meeting Stellantis B71 2290 specification is critical due to its thermal stability and compatibility with the gasoline particulate filter. Short-trip driving increases carbon buildup in the intake and turbo actuator, necessitating periodic cleaning. The Bosch HDEV5 fuel pump is sensitive to low-octane fuel, risking knock and reduced efficiency. Post-2020 models feature updated wastegate actuators; pre-2019 units should be inspected per Stellantis SIB PTS-17-005. GPF regeneration must complete fully to avoid limp-mode events.
Oil Specs: Requires SP 5W-30 (B71 2290) specification (Stellantis SIB PTS-15-012). Replaces earlier B71 2290/2291 standards.
Emissions: Euro 6b certification applies to pre-2019 models only (VCA Type Approval #VCA/EMS/5678). Euro 6d-TEMP compliance confirmed for 2019–2023 models with GPF and OBD-II enhancements.
Power Ratings: Measured under ECE R85 standards. 115 kW output requires 98 RON fuel for optimal performance (Stellantis TIS Doc. A31200).
Stellantis Technical Information System (TIS): Docs A31150, A31200, SIB PTS-15-012, PTS-17-005
VCA Type Approval Database (VCA/EMS/5678)
ISO 8855:2011 Road Vehicles — Vehicle Dynamics and Chassis Components — Vocabulary
The Citroën PureTech 155 was used across Citroën's EMP2 platform with transverse mounting and shared within the Stellantis group. This engine received platform-specific adaptations-shorter intake manifolds in the C3 and revised engine mounts in the C5 Aircross-and from 2019 the facelifted C4 adopted the Euro 6d-TEMP variant with enhanced GPF calibration, creating interchange limits. Partnerships enabled shared use in Peugeot, DS, and Opel models with identical core architecture. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped horizontally on the front-facing side of the cylinder block near the starter motor (Stellantis TIS A31160). The 8th VIN digit indicates engine type ('F' for PureTech 155). Pre-2019 models have silver valve covers with black intake manifolds; post-2019 units use black valve covers with revised GPF housings. Critical differentiation from PureTech 130: PureTech 155 features a twin-scroll turbocharger and higher-pressure fuel system. Service parts require model-year verification - turbo actuators before 2020 are incompatible with later units due to internal redesign (Stellantis SIB PTS-17-005).
The PureTech 155's primary reliability risk is turbocharger wastegate actuator failure, with elevated incidence in urban driving cycles. Stellantis internal quality reports from 2018 noted increased warranty claims for underboost conditions in pre-2019 models, while UK DVSA data links a notable share of emissions-related MOT failures to GPF saturation in short-trip vehicles. Frequent cold starts and incomplete regeneration cycles increase carbon loading, making fuel quality and driving pattern adherence critical.
Analysis derived from Stellantis technical bulletins (2016-2021) and UK DVSA failure statistics (2018-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about CITROEN PURETECH155.
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