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 engi…
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 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.
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.
The most common questions about engine codes, what they mean, how to find them and how this database works
Yes. The 1KR-FE is a simple, robust three-cylinder engine with a strong reliability record. It uses a maintenance-free timing chain and proven port injection. While minor carbon buildup can occur, it rarely causes major issues. With regular oil changes using correct 5W-30 ACEA A5/B5 oil, these engines commonly exceed 150,000 km without major repairs.
Top issues include mild intake valve carbon buildup, VVT-i actuator rattle from oil sludge, throttle body contamination, and engine mount wear. None are typically severe—most are resolved with cleaning or minor part replacement. These are documented in Peugeot TIB 14‑09‑03 and widely observed in 108 service records.
Exclusively the Peugeot 108 (2014–2023) in 1.0 VTi 72 form. This engine is shared with the Toyota Aygo and Citroën C1 under the Toyota Peugeot Citroën Automobile (TPCA) joint venture. All applications use identical mechanical components and meet Euro 5 (pre-2019) or Euro 6 (2019–2023) standards.
Limited potential. The 1KR-FE is naturally aspirated with conservative tuning. ECU remaps may yield +3–5 kW, but gains are minimal due to restrictive intake and exhaust. Forced induction is impractical due to low compression tolerance and lack of supporting components. Best suited for stock reliability rather than performance upgrades.
Excellent for city driving. In the Peugeot 108, expect ~5.2 L/100km (city) and ~3.8 L/100km (highway), or ~62 mpg UK combined. Real-world mixed driving typically yields 58–65 mpg (UK), depending on condition and driving style—among the best in its class.
No. The 1KR-FE is a non-interference design. If the timing chain were to fail (extremely rare), pistons will not contact open valves, preventing catastrophic internal damage. This contributes to its reputation for mechanical safety and low repair risk.
Peugeot specifies a 5W‑30 synthetic oil meeting ACEA A5/B5 standards. Always avoid C-series (low-SAPS) oils. Change every 15,000 km or annually to maintain VVT-i function and minimize sludge. Correct oil is critical for actuator longevity and emissions compliance.
Comprehensive technical documentation and regulatory references
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PEUGEOT Official Site
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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
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