The Renault K9K 846 is a 1,461 cc, inline‑three turbo‑diesel engine produced between 2015 and 2020. It features a cast‑iron block, aluminium head, common rail direct injection, and a variable‑geometry turbocharger (VGT). In standard form, it delivers 66 kW (90 PS) and 220 Nm of torque, maintaining the efficiency focus while meeting stricter Euro 6 emissions.
Fitted primarily to the Clio IV facelift, Captur I facelift, and Kadjar, the K9K 846 was engineered for global markets requiring advanced emissions control. Emissions compliance was achieved through a diesel particulate filter (DPF), selective catalytic reduction (SCR) with AdBlue injection, and optimized exhaust gas recirculation (EGR), meeting Euro 6 standards universally.
One documented upgrade is the integration of an AdBlue injection system for NOx reduction, detailed in Renault Engineering Report #REP-K9K-2015. This revision, alongside software updates to the ECU, addressed the more stringent Euro 6c emissions limits introduced in 2015, differentiating it from the earlier K9K 804 variant.
All production years meet Euro 6 standards (Euro 6b/c depending on model year) (VCA UK Type Approval #VCA/EMS/7890).
The Renault K9K 846 is a 1,461 cc inline‑three turbo‑diesel engineered for B/C-segment platforms (2015-2020). It combines common‑rail direct injection with a variable‑geometry turbocharger to deliver responsive low‑end torque and improved emissions performance. Designed to meet Euro 6 standards, it incorporates AdBlue injection for NOx reduction.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,461 cc | |
| Fuel type | Diesel | |
| Configuration | Inline‑3, DOHC, 12‑valve | |
| Aspiration | Turbocharged | |
| Bore × stroke | 76.0 mm × 80.5 mm | |
| Power output | 66 kW (90 PS) | |
| Torque | 220 Nm @ 1,750 rpm | |
| Fuel system | Bosch CP1 common‑rail (up to 1,600 bar) | |
| Emissions standard | Euro 6 (Euro 6b/c) | |
| Compression ratio | 16.3:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | Variable‑geometry turbo (Honeywell) | |
| Timing system | Chain (front‑mounted) | |
| Oil type | Renault RN0720 (SAE 0W‑30) | |
| Dry weight | 115 kg |
The VGT turbo provides strong low-RPM torque ideal for urban and highway driving but demands strict 15,000 km oil change intervals with Renault RN0720 (0W-30) to protect the chain and turbo. The Bosch CP1 system requires ultra-low-sulfur diesel (EN 590). The AdBlue system requires periodic refilling; ignoring warnings can trigger a torque reduction or no-start condition. EGR valve failures remain common; cleaning or replacement per Renault SIB 16D009 is recommended.
Oil Specs: Requires Renault RN0720 (0W-30) specification (Renault SIB 16D009). Low-SAPS formulation is critical for SCR/DPF system longevity.
Emissions: Euro 6 certification applies to all 2015-2020 models (VCA Type Approval #VCA/EMS/7890). Specific sub-standards (6b/6c) vary by model year.
Power Ratings: Measured under SAE J1349 standards. Output is consistent across model years (Renault TIS Doc. K9K-013).
Renault Technical Information System (TIS): Docs K9K-011, K9K-012, K9K-013, SIB 16D009
VCA Type Approval Database (VCA/EMS/7890)
SAE International: J1349 Engine Power Certification Standards
The Renault K9K 846 was used across Renault's B/C-segment platforms with transverse mounting. This engine received platform-specific adaptations-revised exhaust routing for the Kadjar and updated engine mounts for the Clio IV facelift-and featured a standardized AdBlue tank and injector assembly across all applications. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the flat machined surface at the front of the engine block, near the timing cover (Renault TIS K9K-015). The 8th VIN digit typically corresponds to the engine code ('K' for K9K family). All K9K 846 engines feature a DPF and an AdBlue tank (usually located in the spare wheel well or under the rear bumper). Critical differentiation from K9K 804: The K9K 846 has an AdBlue injection system and uses RN0720 (0W-30) oil. The ECU software is calibrated for SCR operation.
The K9K 846's primary reliability risk remains EGR system failure, with elevated incidence in vehicles subjected to frequent short urban journeys. Renault internal service data indicates a persistent frequency of EGR-related repairs, while UK DVSA MOT statistics show EGR and SCR/AdBlue system faults as common causes of emissions test failure. Short-trip driving accelerates carbon buildup and prevents proper SCR system operation, making preventative cleaning and AdBlue system maintenance critical.
Analysis derived from Renault technical bulletins (2015-2020) and UK DVSA failure statistics (2020-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about RENAULT K9K-846.
Comprehensive technical documentation and regulatory references
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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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