The Peugeot 1KR-FE is a 998 cc, inline‑three naturally aspirated petrol engine produced under license from Toyota between 2014 and 2023. It features a DOHC 12‑valve layout, VVT‑i (Variable Valve Timing – intelligent), and port fuel injection. In standard form it delivered 51 kW (70 PS) and 93 Nm of torque, prioritizing fuel economy and urban drivability with low emissions.
Fitted exclusively to the Peugeot 108 city car—including the 1.0 VTi 72 variant—the 1KR-FE was engineered for low-cost ownership, compact packaging, and compliance with Euro 5 and Euro 6 emissions standards. Emissions control was achieved through a three-way catalytic converter and precise air-fuel ratio management, enabling consistent certification across European markets.
One documented concern is carbon buildup on intake valves due to port injection design limitations, which can reduce airflow and cause rough idle over time. This issue, noted in Peugeot Technical Information Bulletin 14‑09‑03, is common to all port-injected variants of the 1KR family and is mitigated through periodic induction cleaning. No major mechanical redesigns occurred during the production run.
Production years 2014–2018 meet Euro 5 standards; 2019–2023 models comply with Euro 6 (VCA UK Type Approval #VCA/EMS/8765).
The Peugeot 1KR-FE is a 998 cc inline‑three naturally aspirated petrol engine engineered for city cars (2014–2023). It combines port fuel injection with Toyota’s VVT‑i system to deliver smooth low‑speed response and excellent fuel economy. Designed to meet Euro 5 and Euro 6 emissions standards, it emphasizes compactness, light weight, and serviceability.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 998 cc | |
| Fuel type | Petrol | |
| Configuration | Inline‑3, DOHC, 12‑valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 71.0 mm × 84.0 mm | |
| Power output | 51 kW (70 PS) | |
| Torque | 93 Nm @ 4,400 rpm | |
| Fuel system | Port fuel injection (Denso) | |
| Emissions standard | Euro 5 (2014–2018); Euro 6 (2019–2023) | |
| Compression ratio | 11.5:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | None | |
| Timing system | Chain‑driven camshafts | |
| Oil type | ACEA A5/B5 (SAE 5W‑30) | |
| Dry weight | 87 kg |
The port-injected 1KR-FE offers reliable, low-maintenance performance ideal for urban commuting but is susceptible to intake valve carbon buildup over time due to the absence of direct fuel washing. While not as severe as in GDI engines, this can cause idle instability after 80,000 km. Use of quality EN 228 petrol and periodic throttle body cleaning are recommended. The timing chain is designed for life-of-engine service under normal conditions, but oil must meet ACEA A5/B5 (5W-30) to ensure VVT actuator longevity. No turbo or high-pressure fuel system reduces complexity and repair costs.
Oil Specs: Requires ACEA A5/B5 (5W-30) specification (Peugeot TIB 14-09-03). Not compatible with C-series low-SAPS oils.
Emissions: Euro 5 certification applies to 2014–2018 models; Euro 6 compliance confirmed for 2019–2023 (VCA Type Approval #VCA/EMS/8765).
Power Ratings: Measured under ISO 1585 standards. Output consistent across all Peugeot 108 applications (Peugeot TIS Doc. M20511).
Peugeot Technical Information System (TIS): Docs M20511, 1KR‑FE‑2014, TIB 14‑09‑03
VCA Type Approval Database (VCA/EMS/8765)
ISO 1585: Road vehicles — Engine test code
The Peugeot 1KR-FE was used exclusively in the Peugeot 108 city car with transverse mounting and shared platform architecture with the Toyota Aygo and Citroën C1. This engine received no platform-specific mechanical adaptations—only ECU calibration differences for emissions compliance—and from 2019 the facelifted 108 retained the same engine hardware while updating the exhaust catalyst to meet Euro 6. All variants are mechanically interchangeable. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the front of the cylinder block near the exhaust manifold (Peugeot TIS M20511). The 7th VIN digit for Peugeot 108 is 'K' for 1KR-FE applications. All units feature a black plastic cam cover with '1.0' marking and a single serpentine belt driving alternator and A/C. Critical differentiation from other 1.0L engines: the 1KR-FE has three cylinders, DOHC heads, and Toyota-sourced VVT-i actuator on the intake cam. No turbo or direct injection components are present.
The 1KR-FE's primary reliability risk is minor carbon accumulation on intake valves, with elevated incidence in high-mileage or short-trip urban use. Peugeot internal service data from 2021 indicated less than 5% of engines required induction cleaning before 100,000 km, while UK DVSA records show no significant MOT failure trends linked to this engine. Extended oil intervals or poor-quality fuel can accelerate deposit formation, making adherence to service schedules beneficial.
Analysis derived from Peugeot technical bulletins (2014–2023) and UK DVSA failure statistics (2015–2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about PEUGEOT 1KR-FE.
Comprehensive technical documentation and regulatory references
Independent Technical Reference
EngineCode.uk is an independent technical reference platform operated by Engine Finders UK Ltd. We are not affiliated with PEUGEOT or any other manufacturer. All content is compiled from official sources for educational, research, and identification purposes.
Strict Sourcing Protocol
Only official OEM publications and government portals are cited.
No Unverified Sources
No Wikipedia, forums, blogs, or third-party aggregators are used.
Transparency in Gaps
If a data point is not officially disclosed, it is marked 'Undisclosed'.
Regulatory Stability
EU regulations are referenced using CELEX identifiers for long-term stability.
PEUGEOT 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.
Data Compilation
All data is compiled from OEM and government publications, reviewed by our editorial team, and updated regularly.
Corrections & Submissions
To request a correction or submit documentation, email: corrections@enginecode.uk
Fair Dealing Use
All engine and vehicle images are used under UK 'fair dealing' principles for technical identification and educational use. Rights remain with their respective owners.
Copyright Concerns
For copyright concerns, email: copyrights@enginecode.uk
GDPR Compliance
EngineCode.uk complies with UK GDPR. We do not collect personal data unless explicitly provided.
Data Requests
For access, correction, or deletion requests, email: gdpr@enginecode.uk
Trademark Notice
All trademarks, logos, and engine codes are the property of their respective owners. Use on this site is strictly for reference and identification.
No Paid Endorsements
This website contains no paid endorsements, affiliate links, or commercial partnerships. We do not sell parts or services.
Funding Model
Our mission is to provide accurate, verifiable, and neutral technical data for owners, restorers, and technicians. This site is self-funded.
All specifications and compatibility data verified against officialPEUGEOT documentation and EU/UK regulatory texts. Where official data is unavailable, entries are marked “Undisclosed“ .
All external links open in new tabs. Please verify current availability of resources.
