The Citroën HNZ (EB2DT) is a 1,199 cc, inline — three turbocharged petrol engine produced between 2018 and 2023. It forms part of the PSA Group’s EB engine family, co — developed with Toyota, and features direct fuel injection, variable valve timing (DVVT), and a twin — scroll turbocharger. In standard tune, it delivers 96 kW (130 PS) and 230 Nm of torque, offering responsive performance in compact and subcompact applications.
Fitted to models such as the C3, C3 Aircross, and…
All production years 2018–2023 meet Euro 6d-TEMP standards (VCA UK Type Approval #VCA/EMS/5678).
The Citroën HNZ (EB2DT) is a 1,199 cc inline-three turbocharged petrol engine engineered for compact and subcompact vehicles (2018–2023). It combines direct fuel injection with a twin-scroll turbocharger and DVVT to deliver responsive low-end torque and refined cruising. Designed to meet Euro 6d-TEMP emissions standards, it balances performance, fuel economy, and regulatory 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 | 96 kW (130 PS) @ 5,500 rpm | |
Torque | 230 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 ML5–62 turbo with vacuum-actuated wastegate | |
Timing system | Timing chain (long-life, non-serviceable) | |
Oil type | PSA B71 2290 (SAE 0W-20) | |
Dry weight | 97 kg |
The Citroën HNZ (EB2DT) was used across Citroën's B-segment platforms with transverse mounting and shared with DS Automobiles and Peugeot under PSA Group architecture. This engine received platform-specific calibrations-tuned intake manifolds in the DS 3 Crossback and revised cooling in the C3 Aircross-and from 2021 received updated ECU mapping and actuator hardware to address boost control concerns, creating interchange limits. All adaptations are documented in OEM technical bulletins.
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The HNZ (EB2DT)'s primary reliability risk is turbocharger wastegate actuator sticking, with elevated incidence in short-trip urban use. PSA internal field reports from 2021 indicated a significant number of pre-2021 units required actuator service before 80,000 km, while UK DVSA data shows GPF-related faults among top emissions failures for Euro 6 petrols. Frequent cold starts and low-speed driving increase carbon accumulation, making regular highway operation and correct oil use critical.
Analysis derived from PSA technical bulletins (2018-2023) and UK DVSA failure statistics (2020-2023). Repair procedures should follow manufacturer guidelines.
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The HNZ (EB2DT) is generally reliable when maintained properly. Early models (2018–2020) had issues with turbo wastegate actuators, but post-2021 revisions resolved most concerns. The timing chain is designed for life, but oil changes with correct PSA B71 2290 (0W-20) fluid every 15,000 km are essential. With proper care, 150,000 km+ lifespan is achievable.
The most documented issues are turbo wastegate actuator sticking (causing limp mode), GPF clogging from insufficient regeneration, and intake carbon buildup due to direct injection. Timing chain tensioner wear is rare but possible with poor maintenance. These are covered in PSA service bulletins and technical updates.
The HNZ (EB2DT) 1.2L PureTech 130 PS engine is used in the Citroën C3 (2018–2023) and C3 Aircross (2018–2023). It is also shared across PSA Group models including the DS 3 Crossback, Peugeot 208, and Opel Corsa, all with transverse front-wheel-drive layouts and Euro 6d-TEMP compliance.
Yes, the HNZ (EB2DT) responds well to ECU remapping. Stage 1 tunes typically achieve 150–160 PS safely, as the stock turbo and internals support moderate increases. Supporting mods like an upgraded intercooler and exhaust improve reliability. However, tuning may accelerate GPF clogging and void warranties.
In real-world mixed driving, expect 5.8–6.5 L/100km (44–49 mpg UK). The C3 with this engine achieves approximately 5.2 L/100km (54 mpg UK) on highways. Urban driving may see 7.0 L/100km (40 mpg UK) due to stop-start conditions. GPF regeneration can temporarily reduce economy.
Yes, the HNZ (EB2DT) is an interference engine. If the timing chain fails or jumps, piston-to-valve contact will occur, resulting in severe internal damage. While the chain is long-life, maintaining correct oil levels and intervals is critical to prevent tensioner failure and timing issues.
The engine requires PSA B71 2290 specification oil (SAE 0W-20). This low-viscosity fluid ensures proper turbo bearing and timing chain lubrication. Oil changes should be performed every 15,000 km or annually. Using incorrect oil can lead to coking, wear, and reduced component lifespan.
Comprehensive technical documentation and regulatory references
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Regulatory Stability
EU regulations are referenced using CELEX identifiers for long-term stability.
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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