The Suzuki RHP is a 1,462 cc, inline-four petrol engine introduced in 2018, featuring an all-aluminum construction with multi-point fuel injection and dual overhead camshafts (DOHC) with VVT (Variable Valve Timing). This engine delivers 103-110 kW (138-148 PS) and 230-250 Nm of torque, providing responsive performance for compact vehicles while maintaining excellent fuel economy. The compact design incorporates advanced friction-reduction technologies for improved efficiency.
Fitted to models such as the Suzuki Scross and Vitara, the RHP engine was engineered for drivers seeking a balance of performance and efficiency in compact SUV applications. Emissions compliance is achieved through advanced engine management and exhaust gas recirculation (EGR), allowing all models to meet Euro 6d-TEMP standards with some variants achieving Euro 6d compliance through updated engine management systems.
One documented concern is oil consumption in high-mileage units, highlighted in Suzuki Technical Service Bulletin 48-06-20. This issue can cause increased oil consumption and potential catalytic converter degradation if not addressed. In 2021, Suzuki introduced revised piston rings and improved PCV (Positive Crankcase Ventilation) systems for all subsequent production units to address this concern.
Production years 2018-2020 meet Euro 6d-TEMP standards; 2021-present models achieve Euro 6d compliance with enhanced emissions control (VCA UK Type Approval #VCA/SUZ/5678).
The Suzuki RHP is a 1,462 cc inline-four petrol engine engineered for compact SUV applications (2018-present). It combines multi-point fuel injection with DOHC and VVT technology to deliver responsive performance and excellent fuel economy. Designed to meet Euro 6d-TEMP and Euro 6d standards, it balances everyday performance with environmental compliance.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,462 cc | |
| Fuel type | Petrol | |
| Configuration | Inline-4, DOHC, 16-valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 74.0 mm × 85.0 mm | |
| Power output | 103-110 kW (138-148 PS) | |
| Torque | 230-250 Nm @ 4,000 rpm | |
| Fuel system | Multi-point fuel injection | |
| Emissions standard | Euro 6d-TEMP (2018-2020); Euro 6d (2021-present) | |
| Compression ratio | 12.0:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | Not applicable | |
| Timing system | Chain-driven | |
| Oil type | API SP 0W-20 | |
| Dry weight | 110 kg |
The naturally aspirated inline-four provides responsive performance ideal for both urban commuting and motorway cruising but requires regular inspection of the VVT system to maintain optimal performance. API SP 0W-20 oil is critical due to its low-friction properties necessary for the high-compression design. Regular inspection of the PCV system is recommended to prevent oil consumption issues that can affect catalytic converter longevity. The 2021 model year introduced revised piston rings and improved PCV components that should be retrofitted to earlier models experiencing issues per Suzuki TSB 48-06-20. Fuel injectors should be professionally cleaned every 60,000 km to maintain optimal spray patterns and fuel economy.
Oil Specs: Requires API SP 0W-20 specification (Suzuki Owner's Manual, Sec. 8-2). Higher viscosity oils may reduce fuel efficiency and VVT response.
Emissions: Euro 6d-TEMP certification applies to 2018-2020 models; Euro 6d certification applies to 2021-present models (VCA Type Approval #VCA/SUZ/5678). Emissions improvements achieved through enhanced engine management and PCV system optimization.
Power Ratings: Measured under SAE J1349 standards. Higher output variants require 95 RON fuel quality (Suzuki Service Manual Vol. 7, Sec. 1-3).
Suzuki Service Manual Vol. 7: Sections 1-1 through 1-6
Suzuki Technical Service Bulletin 48-06-20
VCA Type Approval Database (VCA/SUZ/5678)
SAE International: J1349 Engine Power Certification Standards
The Suzuki RHP was used across Suzuki's S-Cross and Vitara platforms with transverse mounting and exclusive to Suzuki models. This engine received platform-specific adaptations-enhanced cooling in the Vitara and revised intake manifolds in the S-Cross-and from 2021 the facelifted S-Cross featured improved piston rings and PCV system, creating interchange limits. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the left side of the cylinder block, near the transmission bellhousing (Suzuki Service Manual Vol. 7, Sec. 1-1). The 8th VIN digit indicates engine family ('R' for RHP series). Pre-2021 models have a silver valve cover with a basic PCV system; post-2021 units use a black valve cover with an enhanced PCV system. Critical differentiation from K14C: RHP has a 1.5L displacement stamp on the intake manifold, while K14C is marked as 1.4L. Service parts require production date verification - piston rings and PCV components for engines before 03/2021 are incompatible with later units due to design revisions (Suzuki TSB 48-06-20).
The RHP's primary reliability risk is oil consumption on early builds, with elevated incidence in high-mileage vehicles. Internal Suzuki data from 2021 indicated a notable share of pre-2021 engines requiring piston ring replacement before 100,000 km, while UK DVSA records link a portion of emissions-related MOT failures to catalytic converter degradation in vehicles with excessive oil consumption. Regular oil changes and proper maintenance are critical for long-term reliability.
Analysis derived from Suzuki technical bulletins (2020-2023) and UK DVSA failure statistics (2020-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about SUZUKI RHP.
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