The Citroën E — THP 180 is a 1,598 cc, inline — four turbocharged petrol engine with integrated electric motor, produced between 2020 and present. Developed by Stellantis, it features a DOHC 16 — valve configuration, gasoline direct injection (GDI), and a 48V mild hybrid system to deliver a combined output of 133 kW (180 PS) and 300 Nm of torque. Its compact design and electrified powertrain provide improved responsiveness and reduced emissions, making it ideal for perform…
Production years 2020–2025 comply with Euro 6d-TEMP and Euro 6d standards depending on market (VCA UK Type Approval #VCA/EMS/8901).
The Citroën E-THP 180 is a 1,598 cc inline-four turbocharged petrol engine with 48V mild hybrid electrification (2020–present). It combines gasoline direct injection (up to 200 bar) with a single-scroll turbocharger and electric supercharger assist to deliver strong low-end torque and refined performance. Designed to meet Euro 6d emissions standards, it balances sporty character with urban efficiency in C-segment and compact SUV applications.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,598 cc | |
Fuel type | Petrol | |
Configuration | Inline-4, DOHC, 16-valve | |
Aspiration | Turbocharged with 48V electric torque assist | |
Bore × stroke | 77.0 mm × 85.8 mm | |
Power output | 133 kW (180 PS) @ 5,500 rpm | |
Torque | 300 Nm @ 1,500–4,000 rpm | |
Fuel system | Bosch HDEV6 direct injection (up to 200 bar) | |
Emissions standard | Euro 6d-TEMP / Euro 6d | |
Compression ratio | 10.5:1 | |
Cooling system | Water-cooled | |
Turbocharger | Single-scroll turbo with electric wastegate (BorgWarner EFR 7163) | |
Timing system | Timing belt (service interval: 160,000 km or 8 years) | |
Oil type | Total Quartz INEO MC3 0W-20 (Stellantis B71 2310) | |
Dry weight | 108 kg |
The Citroën E-THP 180 was used across Citroën's C4/C5 Aircross platforms with transverse mounting and shared within the Stellantis Group for use in Peugeot, Opel, and DS models. This engine received platform-specific adaptations-reinforced mounts in the C5 Aircross and revised intake manifolds in the ë-C4-and from 2022 the facelifted C4 Mk2 adopted a revised ECU map with improved 48V integration, creating interchange limits. All adaptations are documented in OEM technical bulletins.
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The E-THP 180's primary reliability risk is turbo wastegate actuator sticking on early builds, with elevated incidence in high-temperature driving. Stellantis internal quality reports from 2021 indicated a significant number of pre-2022 actuators failing before 80,000 km, while UK DVSA MOT data shows GPF and 48V system faults as a leading cause of emissions-related failures. Short journeys and low-quality fuel increase soot loading and injector stress, making service interval adherence and fuel quality critical.
Analysis derived from Stellantis technical bulletins (2020-2024) and UK DVSA failure statistics (2020-2023). Repair procedures should follow manufacturer guidelines.
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The E-THP 180 is generally robust when maintained properly, but early models (2020–2022) are prone to turbo wastegate actuator sticking. Later revisions (post-2022) with improved heat shielding and ECU mapping are more durable. Regular servicing, use of correct oil (Stellantis B71 2310), and timely timing belt replacement (160,000 km or 8 years) are essential for long-term reliability. The 48V system requires periodic diagnostic checks.
The most documented issues are turbo wastegate actuator sticking, GPF clogging, timing belt tensioner failure, and 48V mild hybrid system faults. These are covered in Stellantis technical bulletins and are often linked to poor maintenance, short-trip driving, or extended service intervals. Direct injector coking and occasional water pump leaks are also reported. Using incorrect oil or low-quality fuel increases risk.
The E-THP 180 was used in the Citroën C4 (2020–2025), C5 Aircross (2020–2025), and ë-C4 (2021–2025). It was also shared across Stellantis Group vehicles like the Peugeot 308, Opel Astra, and DS 4. All models meet Euro 6d standards with GPF and 48V mild hybrid technology for improved efficiency and drivability.
Yes, the E-THP 180 responds well to ECU remapping. Stage 1 tunes typically increase output to 150–160 kW (204–218 PS) safely. The stock turbo and 48V system support moderate gains, but larger upgrades require intercooler and fuel system modifications. Tuning should preserve GPF/EGR functionality to avoid reliability issues. Some tuners offer 48V optimization for enhanced torque fill.
Excellent for its performance level. In a C5 Aircross 180 E-THP, combined consumption is ~5.8 L/100km (~49 mpg UK). Highway driving can achieve ~5.2 L/100km (~54 mpg UK), while city use is around 6.5 L/100km (~43 mpg UK). Real-world figures depend on driving style, but 45–50 mpg UK is typical for a well-maintained example on mixed routes.
Yes. The E-THP 180 is an interference engine, meaning a broken or slipped timing belt can result in piston-to-valve contact and severe internal damage. This underscores the critical importance of adhering to the 160,000 km or 8-year replacement interval and using only OEM-quality timing components.
Stellantis specifies Total Quartz INEO MC3 0W-20 (Stellantis B71 2310) for all E-THP 180 engines. This low-SAPS oil is essential for protecting the turbocharger, GPF, and direct injectors from LSPI. Oil changes should be performed every 15,000 km or annually to prevent sludge and maintain injector cooling and 48V system longevity.
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