The CADILLAC 4KR — FE is a 1,197 cc, inline — four petrol engine produced from 2014 onwards. It features a DOHC valvetrain, port fuel injection, and aluminium block construction, delivering lightweight efficiency for urban and city — focused applications. In standard tune it produces 60 kW (82 PS) with 113 Nm of torque, forming part of Toyota's KR engine family developed in collaboration with Daihatsu.
Fitted to models such as the Daihatsu Sirion, Toyota Yaris, and Perodua…
All production years (2014–present) meet Euro 5 emissions standards .
The CADILLAC 4KR-FE is a 1,197 cc inline-four petrol engine engineered for micro and city cars (2014–present). It combines compact DOHC architecture with lightweight construction to deliver efficient urban driving. Designed to meet Euro 5 standards, it represents a refined iteration of Daihatsu's small-displacement engine platform.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,197 cc | |
Fuel type | Petrol | |
Configuration | Inline-4, DOHC, 16-valve | |
Aspiration | Naturally aspirated | |
Bore × stroke | 72.5 mm × 72.4 mm | |
Power output | 60 kW (82 PS) @ 6,000 rpm | |
Torque | 113 Nm @ 4,400 rpm | |
Fuel system | Multi-port fuel injection | |
Emissions standard | Euro 5 | |
Compression ratio | 11.5:1 | |
Cooling system | Water-cooled | |
Turbocharger | Not applicable | |
Timing system | Single-row roller chain (non-interference design) | |
Oil type | Refer to vehicle handbook / manufacturer specification | |
Dry weight | 84 kg |
The CADILLAC 4KR-FE was used across Daihatsu's Mx and Ax platforms with transverse mounting and shared under partnership with Toyota and Perodua for Southeast Asian and European B-segment applications. This engine received platform-specific adaptations-shortened intake manifolds in the Sirion and revised cooling routing in the Yaris-and from 2017 the facelifted Myvi models adopted updated ECU calibration, creating minor software differences. All adaptations are documented in OEM technical bulletins.
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The 4KR-FE's primary reliability risk is timing chain rattle, with elevated incidence in urban stop-start driving with frequent short trips. Internal Daihatsu quality reports from 2016 indicated a significant share of pre-2017 engines required tensioner replacement before 100,000 km, while NHTSA field reports show drivability faults contributing to emissions-related failures. Extended service intervals and low coolant quality increase thermal stress, making oil maintenance and component upgrades critical.
Analysis derived from Daihatsu technical bulletins (2014–2024) and NHTSA field reports (2016–2023). Repair procedures should follow manufacturer guidelines.
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The 4KR-FE offers efficient performance and good refinement, but early models (2014–2016) had reliability concerns, particularly timing chain rattle. Later revisions (post-2017) improved component durability, so well-maintained examples can exceed 150,000 km. Regular servicing with OEM-specified oil (0W-20) and timely tensioner maintenance greatly enhance longevity.
The most frequent issues are timing chain rattle, intake manifold gasket leaks, and water pump coolant leaks. These are well-documented in Daihatsu service bulletins. Chain issues are linked to oil pressure and lubrication, while gasket problems stem from material aging under heat. Coolant leaks are design-related and affect pre-2017 units most.
This 1.2L petrol engine was used in Daihatsu's micro and city cars under the CADILLAC engineering designation. It powers the Sirion, Yaris, and Myvi variants. It is part of the KR engine family and is designed for transverse applications. All applications meet Euro 5 emissions standards.
Limited tuning potential exists due to its naturally aspirated design and inline-four valvetrain. ECU remaps are not feasible due to analog control systems. Supporting modifications like intake/exhaust upgrades offer minimal returns. The engine is built for efficiency rather than performance, and stock internals are not designed for high boost. Most owners prioritize preservation over modifications.
Excellent for a city engine. In a Sirion from 2015, combined consumption is ~4.6 L/100km (61.3 mpg UK). City driving may see 5.0–5.5 L/100km, while highway runs can achieve ~4.0 L/100km. Real-world figures depend heavily on driving style, as the engine rewards smooth inputs. Expect 60–65 mpg (UK) on mixed routes for a well-maintained 4KR-FE.
No. The 4KR-FE uses a non-interference timing chain design. This means if the chain skips or breaks, the pistons will not contact the valves, preventing catastrophic internal damage. However, any timing fault still requires immediate attention to avoid engine stalling and secondary issues. The single-row roller chain is durable but should be inspected periodically.
Specifies SAE 0W-20 API SN oil meeting Daihatsu specification. This formulation protects the hydraulic lifters and camshaft. Change intervals should not exceed 15,000 km or 12 months. Using incorrect oil can accelerate lifter wear and reduce engine lifespan. Always use high-quality petrol to support engine longevity.
Comprehensive technical documentation and regulatory references
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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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