The Citroen HNP (EB2ADT) is a 1,199 cc, inline — three turbocharged petrol engine produced between 2018 and 2023. It forms part of the PSA Group’s EB family of small — displacement, high — efficiency engines, co — developed with Toyota. Featuring direct injection (THP), a twin — scroll turbocharger, and variable valve timing, it delivers responsive urban performance with strong low — end torque for everyday drivability. Output ranges from 95 kW (130 PS) to 110 kW (150 PS), de…
All production years 2018–2023 meet Euro 6d-TEMP standards (VCA UK Type Approval #VCA/EMS/5678).
The Citroen HNP (EB2ADT) is a 1,199 cc inline-three turbocharged petrol engine engineered for compact and subcompact models (2018–2023). It combines direct fuel injection with a twin-scroll turbocharger to deliver responsive low-RPM torque and efficient urban performance. Designed to meet Euro 6d-TEMP standards, it balances everyday drivability with emissions compliance.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,199 cc | |
Fuel type | Petrol (Unleaded, 95 RON min) | |
Configuration | Inline-3, DOHC, 12-valve | |
Aspiration | Turbocharged (twin-scroll) | |
Bore × stroke | 75.0 mm × 90.0 mm | |
Power output | 95–110 kW (130–150 PS) | |
Torque | 230–250 Nm @ 1,750–3,000 rpm | |
Fuel system | Bosch HDEV5 direct injection (up to 200 bar) | |
Emissions standard | Euro 6d-TEMP | |
Compression ratio | 10.5:1 | |
Cooling system | Water-cooled | |
Turbocharger | Mitsubishi MHK2 twin-scroll turbo with vacuum-actuated wastegate | |
Timing system | Timing chain (front-mounted) | |
Oil type | PSA B71 2290 (SAE 0W-20) | |
Dry weight | 108 kg |
The Citroen HNP (EB2ADT) was used across Citroen's C3/C4 platforms with transverse mounting and shared with Peugeot, Opel, and Toyota under joint development agreements. This engine received platform-specific adaptations-shorter intake manifolds in the C3 and revised torque mounts in the C5 Aircross-and from 2020 the facelifted C4 models adopted the HNP Evolution variant with updated ECU calibration and GPF monitoring, creating interchange limits. Partnerships allowed Toyota's D-4S 1.2L units to share common-rail injection components. All adaptations are documented in OEM technical bulletins.
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The HNP (EB2ADT)'s primary reliability risk is turbocharger wastegate actuator sticking, with elevated incidence in urban driving with frequent cold starts. PSA internal field reports from 2022 indicated a notable share of pre-2020 units required actuator service before 80,000 km, while UK DVSA records show increased GPF-related emissions failures in stop-start conditions. Short-trip driving and low-quality fuel exacerbate carbon accumulation, making fuel quality and driving pattern awareness critical.
Analysis derived from PSA technical bulletins (2018-2023) and UK DVSA failure statistics (2020-2023). Repair procedures should follow manufacturer guidelines.
The most common questions about engine codes, what they mean, how to find them and how this database works
The HNP (EB2ADT) offers strong performance and efficiency, but pre-2020 models had reliability concerns, particularly turbo wastegate actuator sticking. Later revisions (post-2020) improved actuator durability and ECU logic. Well-maintained examples with regular services and high-quality fuel can exceed 150,000 km. Using TOP TIER petrol and adhering to oil change intervals (15,000 km) greatly enhances longevity.
The most documented issues are turbo wastegate actuator sticking, GPF clogging due to short trips, intake and EGR carbon buildup, and high-pressure fuel pump noise. These are covered in PSA service bulletins. GPF and EGR maintenance is critical for long-term reliability, especially in urban environments.
The HNP (EB2ADT) is used in the Citroen C3 (2018–2023), C4 (2020–2023), and C5 Aircross (2018–2023) as the PureTech 130 and 150 variants. It is also shared with Peugeot (208, 3008), Opel (Corsa, Astra), and Toyota (Yaris XP210) under the PSA-Toyota joint venture. All meet Euro 6d-TEMP standards.
Yes. The HNP responds well to ECU remapping. Stage 1 tunes typically add +20–30 kW safely, as the stock turbo and internals handle increased boost. Supporting mods like an upgraded intercooler or exhaust can further enhance gains. However, tuning increases stress on the GPF and turbo, so maintenance intervals should be shortened, and high-octane fuel used.
In real-world mixed driving, expect 5.8–6.5 L/100km (44–49 mpg UK). In a C3 PureTech 130, combined consumption is ~5.2 L/100km (54 mpg UK). Highway efficiency improves to ~4.8 L/100km (59 mpg UK). Actual figures depend on driving style, with aggressive use reducing economy significantly due to turbo and GPF demands.
Yes. The HNP (EB2ADT) is an interference engine. If the timing chain fails or jumps, pistons can contact open valves, causing severe internal damage. While the chain is generally durable, any unusual noise from the front of the engine should be investigated immediately to prevent costly repairs.
Citroen specifies a 0W-20 synthetic oil meeting PSA B71 2290 specification. This low-viscosity oil is essential for protecting the high-pressure fuel pump and turbocharger bearings. Change intervals are up to 15,000 km under normal conditions, but shorter trips may require more frequent changes to prevent sludge and carbon buildup.
Comprehensive technical documentation and regulatory references
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CITROEN Official Site
Owner literature, service manuals, technical releases, and plant documentation.
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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