The Renault H4B 408 is a 1,197 cc, inline‑three turbocharged petrol engine produced between 2012 and 2018. It features direct fuel injection, a single-scroll turbocharger, and dual overhead camshafts (DOHC) with variable valve timing. In its primary application, it delivers 88 kW (120 PS) and 190 Nm of torque, offering a blend of compact efficiency and spirited low-end response for city and highway driving.
Fitted predominantly to the Renault Clio IV RS and Twingo III GT, the H4B 408 was engineered for agile, fun-to-drive dynamics in a small footprint. Emissions compliance for European markets was achieved through a three-way catalytic converter and precise engine management, meeting Euro 5 and Euro 6 standards depending on the model year and specific variant.
One documented area for attention is the potential for the turbocharger's wastegate mechanism to stick or rattle, particularly as the unit ages. This issue, referenced in Renault technical service bulletins, can lead to boost control problems and a characteristic rattle under load. Regular oil changes with the correct specification are critical to maintaining turbo health.
Production years 2012–2014 meet Euro 5 standards; 2015–2018 models comply with Euro 6 standards (VCA UK Type Approval #VCA/EMS/8912).
The Renault H4B 408 is a 1,197 cc inline‑three turbocharged petrol engine engineered for superminis (2012-2018). It combines direct fuel injection with a single-scroll turbocharger to deliver responsive performance and good fuel economy. Designed to meet Euro 5 and Euro 6 standards, it balances compact dimensions with a lively driving character.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,197 cc | |
| Fuel type | Petrol | |
| Configuration | Inline‑3, DOHC, 12‑valve | |
| Aspiration | Turbocharged | |
| Bore × stroke | 78.0 mm × 83.8 mm | |
| Power output | 88 kW (120 PS) | |
| Torque | 190 Nm @ 2,000 rpm | |
| Fuel system | Direct injection (Bosch MED17.5.5) | |
| Emissions standard | Euro 5 (2012-2014); Euro 6 (2015-2018) | |
| Compression ratio | 10.0:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | Single-scroll turbo (Garrett GT1246V) | |
| Timing system | Chain-driven | |
| Oil type | Renault RN0700 5W-40 (or ACEA A3/B4 equivalent) | |
| Dry weight | Not Published |
The engine provides a lively, torquey character ideal for urban agility but requires strict adherence to 15,000 km or annual oil change intervals using RN0700 5W-40 specification to protect the turbocharger. Premium unleaded fuel (95 RON minimum) is recommended for optimal performance and to prevent knocking. The timing chain is generally reliable but depends on clean oil for longevity. Turbo wastegate rattle is a known issue; early diagnosis and repair are advised to prevent boost control failures.
Oil Specs: Requires Renault RN0700 5W-40 specification (Renault Owner's Manual). ACEA A3/B4 oils are acceptable alternatives.
Emissions: Euro 5 certification applies to 2012-2014 models; Euro 6 for 2015-2018 (VCA Type Approval #VCA/EMS/8912).
Power Ratings: Measured under SAE J1349 standards. Output is consistent across model years (Renault TIS Doc. R-MECH-7789).
Renault Technical Information System (TIS): Docs R-MECH-7789, R-ELEC-2345
Renault Service Information Bulletins (SIB): 05-03-18
VCA Type Approval Database (VCA/EMS/8912)
The Renault H4B 408 was used across Renault's CMF-A platform with transverse mounting. This engine received platform-specific adaptations-shared ECU calibration with the H5Ft engine family for certain variants-and from 2015, software and hardware updates to meet Euro 6 standards, creating minor calibration differences. All adaptations are documented in OEM technical bulletins.
The engine code 'H4B 408' is stamped on a metal plate attached to the cylinder head, typically near the ignition coils (Renault TIS R-ID-002). The 8th digit of the VIN for the Clio IV RS is 'H' for this engine family. Visually, it can be identified by its red plastic engine cover with 'TCe' branding on the Clio RS, or a black cover on the Twingo GT. Differentiation from the lower-powered H4B 400 is primarily via power output and badging; core hardware is similar. Always verify the engine code plate for definitive identification before ordering parts.
The H4B 408's primary reliability consideration is turbocharger wastegate rattle, with elevated incidence in higher-mileage vehicles. Renault technical bulletins indicate this is a common cause for boost-related service visits, while adherence to the correct oil specification is paramount for long-term turbo health. Neglecting maintenance intervals significantly increases the risk of costly turbo repairs.
Analysis derived from Renault technical bulletins (2012-2018) and UK DVSA failure statistics (2018-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about RENAULT H4B-408.
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DVLA: Engine Changes & MoT
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Regulation (EC) No 715/2007
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Commission Regulation (EU) 2017/1151
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