The Renault K9K 812 is a 1,461 cc, inline‑three turbo‑diesel engine produced between 2012 and 2021. It features a cast iron block, aluminium head, and a single overhead camshaft (SOHC) with 12 valves. Common-rail direct injection and a variable-geometry turbocharger (VGT) deliver outputs ranging from 66 kW (90 PS) to 81 kW (110 PS), providing enhanced low-rpm torque and efficiency compared to its fixed-geometry predecessor.
Fitted to models such as the Clio IV, Captur, and Twingo III, the K9K 812 was engineered for improved urban efficiency and reduced emissions. Its compact three-cylinder layout contributes to light weight and fuel economy. Emissions compliance was achieved through exhaust gas recirculation (EGR) and a diesel particulate filter (DPF), allowing it to meet Euro 5 and Euro 6 standards depending on the production year.
One documented improvement is the adoption of a variable-geometry turbocharger, which addresses low-end lag present in earlier K9K variants. This upgrade, detailed in Renault Engineering Bulletin EB-812-01, provides a broader torque curve. From 2015, further revisions for Euro 6 compliance included updated EGR calibration and a more robust DPF system.
Production years 2012–2014 meet Euro 5 standards; 2015–2021 models meet Euro 6 standards (VCA UK Type Approval #VCA/EMS/9876).
The Renault K9K 812 is a 1,461 cc inline‑three turbo‑diesel engineered for supermini and compact SUV platforms (2012-2021). It combines common‑rail direct injection with a variable‑geometry turbocharger to deliver a flatter, more responsive torque curve and improved fuel efficiency. Designed to meet Euro 5 and Euro 6 standards, it represents a significant emissions and drivability upgrade over prior K9K variants.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,461 cc | |
| Fuel type | Diesel | |
| Configuration | Inline‑3, SOHC, 12‑valve | |
| Aspiration | Turbocharged | |
| Bore × stroke | 76.0 mm × 80.5 mm | |
| Power output | 66–81 kW (90–110 PS) | |
| Torque | 220 Nm @ 1,750 rpm | |
| Fuel system | Bosch CP1.2 common‑rail (up to 1,600 bar) | |
| Emissions standard | Euro 5 (2012–2014); Euro 6 (2015–2021) | |
| Compression ratio | 16.3:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | Variable‑geometry turbo (Honeywell) | |
| Timing system | Chain (front‑mounted) | |
| Oil type | Renault RN0700 or RN0710 (SAE 5W‑30) | |
| Dry weight | 112 kg |
The VGT turbo provides a noticeably broader torque band than fixed-geometry predecessors, making the engine feel more responsive in daily driving. Adherence to 15,000 km or annual oil changes with Renault RN0700/0710 (5W-30) is critical for DPF and turbo longevity. Vehicles used for short urban trips require more frequent EGR and DPF system checks to prevent clogging, as outlined in Renault Technical Note 4112B. The Bosch CP1.2 pump requires ultra-low-sulfur diesel (ULSD) to ensure reliability. Euro 6 models (post-2015) feature a more temperature-sensitive DPF regeneration strategy.
Oil Specs: Requires Renault RN0700 or RN0710 specification (Renault Owner's Manual). Equivalent to ACEA C2/C3 standards for DPF protection.
Emissions: Euro 5 certification applies to 2012–2014 models; Euro 6 applies to 2015–2021 models (VCA Type Approval #VCA/EMS/9876).
Power Ratings: Measured under ECE R85 standards. Output varies by model application and ECU calibration (Renault TIS Doc. K9K-009).
Renault Technical Information System (TIS): Docs K9K-007, K9K-008, K9K-009
Renault Service Information Bulletin (SIB): 05 02 15
VCA Type Approval Database (VCA/EMS/9876)
The Renault K9K 812 was used across Renault's B/C-segment platforms with transverse mounting. This engine received platform-specific adaptations-different exhaust manifolds for the Clio versus the Captur-and from 2015 the introduction of NOx adsorber catalysts for Euro 6 compliance, creating minor service part differences. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on a flat pad on the front of the cylinder block, near the gearbox flange (Renault TIS K9K-006). The 8th digit of the VIN typically corresponds to the engine code ('K' for K9K family). Pre-2015 (Euro 5) models have a single catalytic converter/DPF unit; post-2015 (Euro 6) models feature an additional NOx adsorber canister mounted near the engine. Critical differentiation from K9K 768: The K9K 812 has a variable-geometry turbocharger (visible actuator rod on the turbo housing) and a specific ECU part number (e.g., 8201234567). Service parts for the emissions system differ between Euro 5 and Euro 6 variants (Renault Technical Note 4112B).
The K9K 812's primary reliability risk is DPF regeneration issues, with elevated incidence in vehicles subjected to frequent short urban journeys. Renault internal service data indicates a high frequency of DPF-related faults in low-mileage vehicles, while UK DVSA records show DPF warning lights as a common MOT advisory item for Euro 6 models. Short trip cycles prevent the system from reaching optimal operating temperature, making periodic highway driving and correct oil specification critical.
Analysis derived from Renault technical bulletins (2012-2021) and UK DVSA failure statistics (2018-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about RENAULT K9K-812.
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