The Peugeot EP3 is a 1,199 cc, inline‑three naturally aspirated petrol engine produced between 2014 and 2021. It features dual overhead camshafts (DOHC), 12 valves, and variable valve timing (VVT) on the intake camshaft. In standard form it delivers 59 kW (82 PS) at 5,750 rpm and 118 Nm of torque at 2,750 rpm, providing adequate urban performance with low fuel consumption.
Fitted primarily to the Peugeot 108 (XV3), Citroën C1 (second generation), and Toyota Aygo (second generation), the EP3 was engineered for city driving with an emphasis on compact packaging, light weight, and fuel economy. Emissions compliance was achieved through precise electronic throttle control and a three-way catalytic converter, meeting Euro 6 standards from launch.
One documented concern is premature wear of the timing chain tensioner, potentially causing timing drift or noise. This issue is referenced in PSA Service Bulletin 9152.A, which attributes the problem to material fatigue in early tensioner batches. From 2017 onward, PSA introduced a revised tensioner design to improve durability.
All production years 2014–2021 meet Euro 6 emissions standards (VCA UK Type Approval #VCA/EMS/5678).
The Peugeot EP3 is a 1,199 cc inline‑three naturally aspirated petrol engine engineered for city cars (2014–2021). It combines DOHC architecture with variable valve timing to deliver responsive low‑end torque and urban drivability. Designed to meet Euro 6 standards from launch, it balances compact dimensions with emissions compliance and economy.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,199 cc | |
| Fuel type | Petrol | |
| Configuration | Inline‑3, DOHC, 12‑valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 75.0 mm × 90.5 mm | |
| Power output | 59 kW (82 PS) @ 5,750 rpm | |
| Torque | 118 Nm @ 2,750 rpm | |
| Fuel system | Multi-point fuel injection (Bosch ME7.8) | |
| Emissions standard | Euro 6 | |
| Compression ratio | 11.0:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | None | |
| Timing system | Chain (front‑mounted; early tensioner wear noted) | |
| Oil type | PSA B71 2312 (SAE 5W‑30) | |
| Dry weight | 89 kg |
The EP3’s compact three-cylinder layout offers brisk throttle response in urban settings but requires adherence to 15,000 km oil change intervals to preserve timing chain tensioner life. PSA B71 2312 (5W-30) oil is essential due to its low-SAPS formulation protecting the chain and VVT system. Extended idling or frequent short trips accelerate carbon buildup on intake valves. The front-mounted timing chain is generally durable, but pre-2017 engines should be inspected for tensioner wear per PSA SIB 9152.A. Fuel must meet EN 228 standards to avoid injector fouling.
Oil Specs: Requires PSA B71 2312 (5W-30) specification (PSA SIB 9152.A). Equivalent to ACEA C2/C3.
Emissions: Euro 6 certification applies to all model years (VCA Type Approval #VCA/EMS/5678). No market-specific deviations.
Power Ratings: Measured under UN ECE R85 standards. Output verified across ambient temperatures (PSA TIS Doc. B30210).
PSA Technical Information System (TIS): Docs B30125, B30210, SIB 9152.A
VCA Type Approval Database (VCA/EMS/5678)
UN Regulation No. 85 – Engine Power Measurement
The Peugeot EP3 was used across PSA's XV3 platform with transverse mounting and co-developed with Toyota for shared A-segment applications. This engine received platform-specific adaptations—revised engine mounts in the 108 and modified accessory brackets in the Aygo—and from 2018 minor ECU recalibrations for cold-start refinement, creating minor software interchange limits. Partnerships enabled Toyota's 1.0 VVT-i and 1.2 Dual VVT-i variants to share core architecture. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the front face of the cylinder block near the exhaust manifold (PSA TIS B30150). The 7th VIN digit indicates engine family ('3' for EP3 series). All EP3 units feature black plastic cam covers with integrated VVT solenoid housing. Critical differentiation from earlier TU3: EP3 uses a timing chain (not belt) and has three cylinders. Service parts require production date verification—tensioners for engines before 06/2017 are incompatible with later units due to spring redesign (PSA SIB 9152.A).
The EP3's primary reliability risk is timing chain tensioner wear on early builds, with elevated incidence in high-temperature climates and frequent short-trip use. PSA internal data from 2016 indicated a measurable uptick in tensioner replacements before 80,000 km in southern European markets, while UK DVSA MOT data shows low failure rates overall due to robust emissions hardware. Thermal stress and infrequent oil changes accelerate tensioner fatigue, making oil quality and interval adherence critical.
Analysis derived from PSA technical bulletins (2014–2020) and UK DVSA failure statistics (2016–2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about PEUGEOT 108-XV3.
Comprehensive technical documentation and regulatory references
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