The Renault H4M 751 is a 1,598 cc, inline‑four turbo‑diesel engine produced between 2014 and 2018. It features a high — pressure common — rail fuel system, a fixed — geometry turbocharger, and double overhead camshafts. This engine delivers 81 kW (110 PS) and 260 Nm of torque, with its compact design prioritizing efficiency for urban and suburban driving.
Fitted primarily to the Renault Captur, Kadjar, and Megane III, as well as the Nissan Qashqai in certain markets, the H4M…
Production years 2014–2018 meet Euro 5 standards for all applicable markets (VCA UK Type Approval #VCA/EMS/3456).
The Renault H4M 751 is a 1,598 cc inline‑four turbo‑diesel engineered for compact and crossover vehicles (2014-2018). It combines a high-pressure common-rail injection system with a fixed-geometry turbocharger to deliver accessible torque and efficient operation. Designed to meet Euro 5 standards, it balances urban drivability with fuel economy.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,598 cc | |
Fuel type | Diesel | |
Configuration | Inline‑4, DOHC, 16‑valve | |
Aspiration | Turbocharged (Fixed Geometry) | |
Bore × stroke | 76.0 mm × 88.0 mm | |
Power output | 81 kW (110 PS) | |
Torque | 260 Nm @ 1,750 rpm | |
Fuel system | Denso HP3 common‑rail (up to 1,600 bar) | |
Emissions standard | Euro 5 | |
Compression ratio | 15.8:1 | |
Cooling system | Water‑cooled | |
Turbocharger | Single fixed-geometry turbo (Honeywell) | |
Timing system | Chain-driven | |
Oil type | Renault RN0710 5W-30 | |
Dry weight | 142 kg |
The Renault H4M 751 was used across Renault's CMF-B platform with transverse mounting. This engine received platform-specific adaptations-optimized engine mounts for the Captur and revised exhaust routing for the Kadjar. All adaptations are documented in OEM technical bulletins.
The H4M 751's primary documented concern is dual-mass flywheel (DMF) wear, with elevated incidence in vehicles used predominantly for short urban trips. Renault SIB 4015B details the fault, while UK DVSA data indicates EGR system faults as a frequent cause for emissions-related advisories. Maintaining correct driving habits for DPF regeneration and using approved oil are critical for long-term reliability.
Analysis derived from Renault technical bulletins (2014-2018) and UK DVSA failure statistics (2018-2023). Repair procedures should follow manufacturer guidelines.
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The H4M 751 is generally dependable for its intended urban use when maintained correctly. Its main documented issue is the dual-mass flywheel (addressed in SIB 4015B). Long-term reliability hinges on using the correct RN0710 5W-30 oil, allowing the DPF to regenerate through highway driving, and avoiding aggressive clutch use.
The most frequent issues are dual-mass flywheel wear (causing shudder), EGR valve/clogging, DPF clogging from short trips, and potential turbocharger wastegate actuator failure. These are covered in Renault service documentation and are common to many Euro 5 diesels.
The H4M 751 was primarily used in the Renault Captur, Megane III (2014-2016), and Kadjar (2015-2018), badged as Energy dCi 110. It was also shared with Nissan, powering the Qashqai (2014-2018) as the dCi 110 engine in select European markets.
ECU remapping is possible and can yield modest gains (e.g., +10-15 kW). However, the fixed-geometry turbo and standard internals limit potential. Any remap should be conservative to avoid overstressing the DMF and turbocharger, and performed by a specialist familiar with Renault systems.
Official combined figures are around 4.2-4.5 L/100km (63-67 mpg UK), depending on the vehicle (Captur vs Kadjar) and transmission. Real-world economy typically ranges from 4.8 to 6.0 L/100km (47-59 mpg UK), heavily influenced by driving style and DPF regeneration cycles.
Yes. Like virtually all modern engines, the H4M 751 is an interference design. If the timing chain were to fail, the pistons would collide with the open valves, causing catastrophic internal engine damage. The chain is designed for longevity under normal service conditions.
Renault mandates the use of RN0710 specification 5W-30 synthetic oil. This oil is formulated to handle the soot levels generated by the EGR system and to protect the DPF from premature clogging, ensuring the engine's emissions systems function correctly.
Comprehensive technical documentation and regulatory references
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