The Renault K9K 722 is a 1,461 cc, inline‑four turbo‑diesel engine produced between 2007 and 2018. It features a robust cast‑iron block, double overhead camshafts (DOHC), and a fixed‑geometry turbocharger, delivering outputs between 66 kW (90 PS) and 81 kW (110 PS) with peak torque of 200–240 Nm. Its simple, durable architecture prioritizes cost‑effective ownership and strong low‑end pull for city driving.
Fitted extensively to the Clio III, Mégane III, and Kangoo, the K9K 722 was engineered for urban efficiency and dependable daily commuting. Emissions compliance for its production run was primarily met through exhaust gas recirculation (EGR) and, in later models, a diesel particulate filter (DPF), achieving Euro 4 and Euro 5 standards depending on the model year and market.
A documented concern for early K9K 722 engines is premature failure of the dual‑mass flywheel (DMF), often manifesting as drivetrain shudder or vibration. This issue, referenced in Renault Technical Note MEG‑07‑01‑001‑2010, is linked to the high torque characteristics of the engine. Renault subsequently revised the DMF design for improved durability.
Production years 2007–2010 meet Euro 4 standards; 2011–2018 models typically meet Euro 5 compliance depending on market (VCA UK Type Approval #VCA/EMS/5678).
The Renault K9K 722 is a 1,461 cc inline‑four turbo‑diesel engineered for supermini and compact MPV applications (2007-2018). It combines a fixed‑geometry turbocharger with DOHC valvetrain to deliver responsive low‑end torque and frugal fuel consumption. Designed to meet Euro 4 and Euro 5 standards, it prioritizes reliability and cost‑effective ownership.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,461 cc | |
| Fuel type | Diesel | |
| Configuration | Inline‑4, DOHC, 8‑valve | |
| Aspiration | Turbocharged | |
| Bore × stroke | 76.0 mm × 80.5 mm | |
| Power output | 66–81 kW (90–110 PS) | |
| Torque | 200–240 Nm @ 1,750 rpm | |
| Fuel system | Siemens SID804 common‑rail (up to 1,600 bar) | |
| Emissions standard | Euro 4 (pre‑2011); Euro 5 (2011 onwards) | |
| Compression ratio | 16.3:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | Single fixed‑geometry turbo (Garrett) | |
| Timing system | Chain (front‑mounted) | |
| Oil type | Renault RN0710 (SAE 5W‑40) | |
| Dry weight | 117 kg |
The fixed-geometry turbo provides predictable, lag-free torque ideal for stop-start traffic but requires adherence to 20,000 km oil change intervals to protect the timing chain and turbo bearing. Renault RN0710 (5W-40) oil is mandatory to ensure compatibility with emissions systems and prevent injector coking. The high torque output places stress on the dual-mass flywheel; early units (pre-2011) are prone to failure, necessitating replacement with the revised part per Renault Technical Note MEG-07-01-001-2010. EGR systems require periodic cleaning to maintain performance and prevent DPF blockages.
Oil Specs: Requires Renault RN0710 specification (Renault Owner's Manual). Equivalent to ACEA B4.
Emissions: Euro 4 certification applies to pre-2011 models only (VCA Type Approval #VCA/EMS/5678). 2011 onwards models meet Euro 5.
Power Ratings: Measured under SAE J1349 standards. Output varies by model application (Renault TIS Doc. K9K-003).
Renault Technical Information System (TIS): Docs K9K-001, K9K-002, K9K-003
VCA Type Approval Database (VCA/EMS/5678)
Renault Service Information Bulletin (SIB) K9K-03
The Renault K9K 722 was used across Renault's B/C platforms with transverse mounting. This engine received platform-specific adaptations-reinforced engine mounts in the Kangoo and specific ECU mapping for the Clio-and from 2011 received DPF hardware for Euro 5 compliance, creating minor service part differences. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on a flat boss on the front of the cylinder block, near the gearbox flange (Renault TIS K9K-005). The 8th VIN digit typically indicates engine power output ('7' for 90 PS, '8' for 110 PS). Pre-2011 engines lack a DPF and have a simpler exhaust manifold; post-2011 units feature a DPF canister integrated into the exhaust system. Critical differentiation from K9K 800: K9K 722 uses a Siemens SID804 ECU, while K9K 800 uses a Delphi unit. Service parts for the turbo and EGR valve differ between pre- and post-DPF models.
The K9K 722's primary reliability risk is dual-mass flywheel (DMF) failure on higher-output variants, with elevated incidence in stop-start urban use. Renault internal data indicated a notable failure rate before 150,000 km for early builds, while UK DVSA records show EGR system faults as a common MOT failure point. High torque and frequent gear changes increase DMF stress, making inspection and using the latest OEM part critical.
Analysis derived from Renault technical bulletins (2010-2016) and UK DVSA failure statistics (2015-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about RENAULT K9K-722.
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Regulation (EC) No 715/2007
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