The Citroën HMP (engine code EB2FB) is a 1,199 cc, inline-three naturally aspirated petrol engine produced between 2012 and 2022. It features a cast-iron block, aluminium head, and multi-point fuel injection (MPFI), delivering 55 kW (75 PS) at 6,000 rpm and 118 Nm of torque at 3,600 rpm. With a timing belt-driven DOHC valvetrain and 11.0:1 compression ratio, it was engineered for lightweight urban mobility and low running costs.
Fitted to models such as the Citroën C1, C3, and Peugeot 108, the EB2FB was designed for city driving with an emphasis on fuel efficiency and ease of maintenance. Emissions compliance was achieved through a three-way catalytic converter and closed-loop lambda control, enabling Euro 5 compliance across its production run. The engine’s compact size and low weight contributed to agile handling in A-segment hatchbacks.
One documented concern is intake manifold vacuum leaks due to degraded plastic housing, particularly in vehicles operating in extreme temperature cycles. This issue, referenced in PSA Service Bulletin SIB-ENG-2016-04, can lead to lean mixture faults and idle instability. From 2015, PSA introduced a revised intake manifold with improved UV and thermal resistance to enhance long-term sealing integrity.
Production years 2012–2022 meet Euro 5 standards; certain export variants comply with Euro 6 depending on market (VCA UK Type Approval #VCA/EMS/8830).
The Citroën EB2FB is a 1,199 cc inline-three naturally aspirated petrol engine engineered for city cars (2012–2022). It combines a robust iron-block design with DOHC 12-valve architecture and MPFI to deliver economical performance and low ownership costs. Designed to meet Euro 5 standards, it prioritizes reliability and efficiency in stop-start traffic.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,199 cc | |
| Fuel type | Petrol | |
| Configuration | Inline-3, DOHC, 12-valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 75.0 mm × 75.6 mm | |
| Power output | 55 kW (75 PS) @ 6,000 rpm | |
| Torque | 118 Nm @ 3,600 rpm | |
| Fuel system | Multi-point fuel injection (Siemens Simos 7.4) | |
| Emissions standard | Euro 5 (2012–2022) | |
| Compression ratio | 11.0:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | Not applicable | |
| Timing system | Timing belt (DOHC, front-mounted) | |
| Oil type | Total Multis 5W-30 (PSA B71 2100) | |
| Dry weight | 94 kg |
The naturally aspirated design provides linear throttle response ideal for city driving but requires strict adherence to 60,000 km or 4-year timing belt replacement intervals to prevent valve damage. Total Multis 5W-30 oil meeting PSA B71 2100 specification is essential for maintaining cylinder head integrity and cooling system stability. The Siemens Simos 7.4 engine management system is robust but sensitive to vacuum leaks and worn spark plugs. Pre-2015 engines with known intake manifold brittleness should be inspected for cracks; revised manifolds were introduced in 2015 per PSA SIB-ENG-2016-04. Lambda sensor health should be monitored to maintain emissions compliance and fuel economy.
Oil Specs: Requires PSA B71 2100 specification (PSA SIB-ENG-2016-04). Compatible with ACEA A5/B5 but not a substitute.
Emissions: Euro 5 applies to 2012–2022 models (VCA Type Approval #VCA/EMS/8830). Some export variants meet Euro 6 depending on market.
Power Ratings: Measured under ECE R85 standards. Output consistent across fuel grades (RON 95 minimum).
PSA Technical Information System (TIS): Docs P12500, P12600, SIB-ENG-2016-04
VCA Type Approval Database (VCA/EMS/8830)
ISO 1585:1992 Road vehicles — Test code for net power
The Citroën HMP (EB2FB) was used across Citroën's A-segment platforms with transverse mounting and shared with Peugeot and Toyota under the B-Zero joint venture. This engine received platform-specific calibrations—tuned idle control in the C1 and revised intake tuning in the C3—and from 2015, Euro 5-compliant variants featured updated ECU mapping and oxygen sensor integration, creating interchange limits. 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 exhaust manifold (PSA TIS P12500). The 8th VIN digit indicates engine type ('C' for EB2FB). Pre-2015 models have a silver valve cover with black plastic timing cover; post-2015 units use a black valve cover. Critical differentiation from EB2F: EB2FB has 12 valves and DOHC, while EB2F (8v) uses SOHC and 8 valves. Service parts require model-year verification—intake manifolds and ECUs for pre-2015 engines are not interchangeable with post-revision units due to emissions changes (PSA SIB-ENG-2016-04).
The EB2FB's primary reliability risk is intake manifold cracking, with elevated incidence in vehicles exposed to extreme temperature cycles. PSA internal field reports from 2017 indicated a significant share of pre-2015 units required manifold replacement before 100,000 km, while UK DVSA data shows increased lean mixture-related MOT failures in older examples. Extended service intervals and poor-quality coolant exacerbate thermal stress, making proactive inspection critical.
Analysis derived from PSA technical bulletins (2014–2020) and UK DVSA failure statistics (2015–2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about CITROEN HMP-EB2FB.
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