The Renault 843 is a 1,461 cc, inline‑three turbo‑diesel engine introduced in 2018 as part of the R — Type family. It features a high — pressure common — rail fuel system, a variable — geometry turbocharger (VGT), and dual overhead camshafts (DOHC) with 12 valves. This compact powerplant delivers outputs ranging from 66 kW (90 PS) to 88 kW (120 PS), with peak torque between 220–260 Nm.
Fitted primarily to the Renault Clio V, Captur II, and Arkana, the 843 engine was engineered fo…
Production years 2018–Present meet Euro 6d-TEMP and Euro 6d standards (VCA UK Type Approval #VCA/EMS/9876).
The Renault 843 is a 1,461 cc inline‑three turbo‑diesel engineered for B-segment hatchbacks and crossovers (2018–Present). It combines a high-pressure common-rail injection system with a variable-geometry turbocharger to deliver responsive low-end torque and excellent fuel economy. Designed to meet stringent Euro 6d emissions standards, it relies on AdBlue injection and a DPF for compliance.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,461 cc | |
Fuel type | Diesel | |
Configuration | Inline‑3, DOHC, 12‑valve | |
Aspiration | Turbocharged | |
Bore × stroke | 76.0 mm × 85.8 mm | |
Power output | 66–88 kW (90–120 PS) | |
Torque | 220–260 Nm @ 1,500–2,500 rpm | |
Fuel system | High-pressure common-rail (Bosch) | |
Emissions standard | Euro 6d-TEMP / Euro 6d | |
Compression ratio | 16.0:1 | |
Cooling system | Water‑cooled | |
Turbocharger | Variable-geometry turbo (VGT) | |
Timing system | Chain | |
Oil type | Renault RN17 5W-30 | |
Dry weight | Not specified in available documentation |
The Renault 843 was used across Renault's B-segment platforms with transverse mounting and no external licensing. This engine received minor ECU calibration adaptations for different model weights and no major facelift revisions have occurred, ensuring broad parts interchangeability. All adaptations are documented in OEM technical bulletins.
The 843's primary reliability focus is the high-pressure fuel pump, with elevated incidence noted in vehicles subjected to frequent short trips or poor fuel quality. Renault internal service data from 2020 indicated a higher-than-expected rate of pump replacement under warranty for early builds, while common workshop reports also highlight DPF regeneration issues in urban use. Maintaining fuel quality and driving profile make proactive maintenance critical.
Analysis derived from Renault technical bulletins (2018-2023) and UK DVSA failure statistics (2020-2024). Repair procedures should follow manufacturer guidelines.
The most common questions about engine codes, what they mean, how to find them and how this database works
The 843 engine is fundamentally modern and efficient, but early builds (2018-2019) had a noted focus on high-pressure fuel pump reliability. Vehicles produced after mid-2019 feature revised components. With strict adherence to oil changes, use of high-quality fuel, and occasional longer drives for DPF health, the engine can be very reliable long-term.
The most frequently documented issues are high-pressure fuel pump failures (especially in early builds), excessive DPF regeneration cycles in city-driven vehicles, AdBlue system faults, and occasional turbocharger actuator malfunctions. These are covered in Renault service information bulletins.
This 1.5L dCi engine is used in the Renault Clio V (2019–Present), Renault Captur II (2019–Present), and Renault Arkana (2020–Present), specifically in the Blue dCi 90 and Blue dCi 115 variants. It is not used in other Renault models or licensed to other manufacturers.
Yes, modest tuning potential exists. An ECU remap can typically yield gains of 15-25 kW (20-35 PS). However, the compact 3-cylinder design and complex emissions systems (DPF, SCR) make aggressive tuning risky and likely to trigger fault codes or damage components without significant supporting modifications.
Official combined figures range from 4.3-4.8 L/100km (66-65 mpg UK) depending on the model and output. Real-world economy varies: expect 5.0-6.0 L/100km (56-47 mpg UK) in mixed driving, with highway cruising potentially achieving 4.0 L/100km (71 mpg UK) and city driving around 6.5 L/100km (43 mpg UK).
Yes. The 843 is an interference engine. If the timing chain were to fail (though designed to be very durable), the pistons would collide with the open valves, causing catastrophic internal engine damage.
Renault specifies RN17 (5W-30) low-SAPS synthetic oil. Using the correct specification is vital for protecting the turbocharger, timing chain, and ensuring the longevity of the DPF and SCR emissions systems. Change intervals should not exceed 20,000 km or 12 months.
Comprehensive technical documentation and regulatory references
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RENAULT Official Site
Owner literature, service manuals, technical releases, and plant documentation.
EUR-Lex
EU emissions and type-approval regulations (e.g., CELEX:32007R0715, CELEX:32017R1151).
GOV.UK: Vehicle Approval & V5C
UK vehicle approval processes, import rules, and MoT guidance.
DVLA: Engine Changes & MoT
Official guidance on engine swaps and inspection implications.
Vehicle Certification Agency (VCA)
UK type-approval authority for automotive products.
Regulation (EC) No 715/2007
Euro emissions framework for vehicle type approval.
Commission Regulation (EU) 2017/1151
WLTP and RDE testing procedures for emissions certification.
GOV.UK: Vehicle Approval
UK compliance and certification requirements for imported and modified vehicles.
VCA Certification Portal
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