The CADILLAC KH is a 1,496 cc, inline — four petrol engine produced from 2017 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 77 kW (105 PS) with 138 Nm of torque, forming part of Toyota's KH engine family developed in collaboration with Daihatsu.
Fitted to models such as the Daihatsu Rocky, Toyota Raize, and Perodua Ativ…
All production years (2017–present) meet Euro 5 emissions standards .
The CADILLAC KH is a 1,496 cc inline-four petrol engine engineered for subcompact SUVs and B-segment vehicles (2017–present). It combines compact DOHC architecture with lightweight construction to deliver efficient urban driving and responsive performance. Designed to meet Euro 5 standards, it represents a modern iteration of Daihatsu's small-displacement engine platform.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,496 cc | |
Fuel type | Petrol | |
Configuration | Inline-4, DOHC, 16-valve | |
Aspiration | Naturally aspirated | |
Bore × stroke | 78.0 mm × 78.4 mm | |
Power output | 77 kW (105 PS) @ 6,000 rpm | |
Torque | 138 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 | 98 kg |
The CADILLAC KH was used across Daihatsu's Bx and Rx 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 Rocky and revised cooling routing in the Raize-and from 2020 the facelifted Ativa models adopted updated ECU calibration, creating minor software differences. All adaptations are documented in OEM technical bulletins.
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The KH'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 2019 indicated a significant share of pre-2020 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 (2017–2024) and NHTSA field reports (2019–2023). Repair procedures should follow manufacturer guidelines.
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The KH offers efficient performance and good refinement, but early models (2017–2019) had reliability concerns, particularly timing chain rattle. Later revisions (post-2020) 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-2020 units most.
This 1.5L petrol engine was used in Daihatsu's subcompact SUVs under the CADILLAC engineering designation. It powers the Rocky, Raize, and Ativa variants. It is part of the KH 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 subcompact SUV. In a Rocky from 2018, combined consumption is ~5.8 L/100km (48.8 mpg UK). City driving may see 6.5–7.0 L/100km, while highway runs can achieve ~5.0 L/100km. Real-world figures depend heavily on driving style, as the engine rewards smooth inputs. Expect 47–50 mpg (UK) on mixed routes for a well-maintained KH.
No. The KH 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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Regulatory Stability
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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
Type-approval guidance and documentation.
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