The Renault K9K 770 is a 1,461 cc, inline‑four turbo‑diesel engine produced between 2008 and 2015. It features a common rail direct injection system, a fixed geometry turbocharger, and dual overhead camshafts (DOHC). In its standard 86 PS configuration, it delivers 200 Nm of torque, with the variable geometry turbo (VGT) variant offering 110 PS. The DOHC layout enables precise valve control for improved efficiency and emissions.
Fitted to models such as the Clio III, Még…
Production years 2008–2010 meet Euro 4 standards; 2011–2015 models meet Euro 5 compliance (VCA UK Type Approval #VCA/EMS/5678).
The Renault K9K 770 is a 1,461 cc inline‑four turbo‑diesel engineered for supermini and compact MPV applications (2008-2015). It combines common‑rail direct injection with a fixed‑geometry or variable‑geometry turbocharger to deliver strong low‑end torque and frugal fuel consumption. Designed to meet Euro 4 and Euro 5 standards, it balances urban agility with long‑distance economy.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,461 cc | |
Fuel type | Diesel | |
Configuration | Inline‑4, DOHC, 8‑valve | |
Aspiration | Turbocharged (Fixed or VGT) | |
Bore × stroke | 76.0 mm × 80.5 mm | |
Power output | 63–81 kW (86–110 PS) | |
Torque | 200 Nm @ 1,900 rpm (86 PS) / 240 Nm @ 1,750 rpm (110 PS) | |
Fuel system | Denso HP3 common‑rail (up to 1,600 bar) | |
Emissions standard | Euro 4 (2008–2010); Euro 5 (2011–2015) | |
Compression ratio | 15.8:1 | |
Cooling system | Water‑cooled | |
Turbocharger | Fixed geometry (86 PS) or Variable geometry (110 PS) | |
Timing system | Chain‑driven | |
Oil type | Renault RN0700 / RN0710 (SAE 5W‑30) | |
Dry weight | 117 kg |
The Renault K9K 770 was used across Renault's B/C platforms with transverse mounting. This engine received platform-specific adaptations-reinforced mounts in the Kangoo for commercial use and revised air intakes in the Mégane-and from 2011 the facelifted Clio models adopted revised EGR hardware and software, creating minor parts differences. All adaptations are documented in OEM technical bulletins.
The K9K 770's primary reliability risk is EGR system failure, with elevated incidence in vehicles used for short urban journeys. Renault internal reports indicated a high rate of EGR-related faults in pre-2011 builds, while UK DVSA MOT data shows DPF issues are a leading cause of failure for diesel vehicles of this era. Incomplete regeneration cycles make proactive maintenance and driving habit adjustments critical.
Analysis derived from Renault technical bulletins (2008-2015) and UK DVSA failure statistics (2015-2023). Repair procedures should follow manufacturer guidelines.
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The K9K 770 is generally robust with a simple chain-driven design, but its Achilles' heel is the EGR/DPF system, especially in city-driven cars. Models from 2011 onwards with revised EGR components are more resilient. Longevity heavily depends on using the correct low-SAPS oil (RN0710) and ensuring the DPF regenerates fully through regular highway driving.
The most frequent issues are EGR valve/cooler clogging, DPF blockages from short trips, and turbo actuator failures on the 110 PS variant. Injector seal leaks and associated fuel contamination of the oil are also common. These are well-documented in Renault service bulletins and owner reports.
This 1.5L dCi engine was widely used in the Clio III (2008-2012), Mégane III (2008-2015), and Kangoo (2008-2015). It was also found in the Nissan Micra K13 (2010-2016) as part of the Renault-Nissan alliance. Power outputs were 86 PS or 110 PS depending on the model and year.
Yes, the K9K 770 responds well to ECU remapping. The 86 PS version can often be safely increased to 105-115 PS, while the 110 PS variant can reach 130-140 PS with a stage 1 map. The engine and clutch are generally strong enough for these gains, but supporting modifications like a de-cat or DPF delete (where legal) are often recommended for reliability.
Excellent for its era. In a Clio III 1.5 dCi 86, expect around 4.5 L/100km (63 mpg UK) on a combined cycle. The Mégane III might return 4.8-5.2 L/100km (54-59 mpg UK). Real-world economy is highly dependent on driving style and ensuring the DPF regenerates efficiently, as blocked DPFs drastically increase consumption.
Yes. The K9K 770 is an interference engine. If the timing chain were to fail (a rare occurrence if serviced correctly), the pistons would collide with the open valves, causing catastrophic internal engine damage. Fortunately, the chain is very durable with proper oil maintenance.
Renault mandates RN0700 or RN0710 specification oil, typically 5W-30. RN0710 is a low-SAPS (low ash) oil and is essential for vehicles equipped with a DPF to prevent filter clogging. Using the wrong oil will damage the DPF and potentially invalidate warranties. Change intervals should not exceed 20,000 km or 1 year.
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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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