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 su…
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 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.
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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.
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The PureTech 155 offers strong performance and efficiency, but early models (2016–2018) had reliability concerns, particularly turbo wastegate and GPF issues. Later revisions (post-2019) improved actuator durability and emissions control. Well-maintained examples with regular oil changes and proper driving cycles can exceed 150,000 km. Using high-quality fuel and SP 5W-30 oil is essential for longevity.
The most common issues are turbocharger wastegate actuator sticking, GPF clogging from short trips, intake carbon buildup, and timing chain tensioner wear. These are documented in Stellantis service bulletins PTS-17-005 and PTS-18-003. Regular maintenance and proper driving habits significantly reduce failure risks.
The PureTech 155 is used in the C3 (2016–2023), C4 (2018–2023), and C5 Aircross (2018–2023). It is also shared across Stellantis brands including DS 3 Crossback, Peugeot 308, and Opel Astra. All applications meet Euro 6b or Euro 6d-TEMP standards depending on model year.
Yes, the PureTech 155 is tunable via ECU remap. Stage 1 modifications typically yield +20–30 kW safely, as the stock turbo and internals handle increased boost. However, tuning increases thermal load on the GPF and turbo, so supporting modifications (intercooler, exhaust) are recommended for sustained performance. Always use 98 RON fuel post-tuning.
In real-world conditions, the PureTech 155 achieves approximately 6.5 L/100 km (36 mpg UK) in urban driving and 5.2 L/100 km (54 mpg UK) on highways. Combined consumption is around 5.8 L/100 km (49 mpg UK). Fuel economy varies with driving style, GPF regeneration frequency, and ambient temperature.
No. The PureTech 155 uses a non-interference timing chain design. This means that if the chain fails or jumps, piston-to-valve contact is unlikely, reducing the risk of catastrophic engine damage. However, immediate repair is still advised to prevent secondary damage and maintain performance.
Stellantis specifies SP 5W-30 synthetic oil meeting B71 2290 standard. Oil must be changed every 15,000 km or annually to protect the turbocharger, GPF, and timing system. Using incorrect oil can lead to carbon buildup, GPF clogging, and reduced engine lifespan.
Comprehensive technical documentation and regulatory references
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CITROEN Official Site
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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.
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VCA Certification Portal
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