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 for urban agility and fuel efficiency, offering strong low-end response for city driving. Emissions compliance for Euro 6d-TEMP and later Euro 6d standards was achieved through a sophisticated exhaust aftertreatment system, including a diesel particulate filter (DPF) and selective catalytic reduction (SCR) with AdBlue.
A key reliability focus documented by Renault involves the high-pressure fuel pump, with Service Information Bulletin REN-SIB-18-03 highlighting potential premature wear under specific operating conditions. This concern led to revised pump specifications and updated calibration software for vehicles produced after mid-2019.
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 VGT turbo provides immediate throttle response ideal for stop-start traffic but demands strict adherence to 20,000 km or annual oil change intervals to protect the turbo and timing chain. Renault RN17 5W-30 oil is critical for its low-SAPS formulation, which protects the DPF and SCR system. Vehicles used predominantly for short trips may experience frequent DPF regeneration cycles; occasional longer highway drives are recommended. The high-pressure fuel pump requires ultra-low-sulfur diesel (EN 590) to prevent premature wear, as per Renault SIB REN-SIB-18-03.
Oil Specs: Requires Renault RN17 (5W-30) specification (Renault Owner's Manual). Compatible with ACEA C2/C3.
Emissions: Euro 6d-TEMP certification applies to 2018–2020 models; Euro 6d for 2021+ (VCA Type Approval #VCA/EMS/9876).
Power Ratings: Measured under EEC 80/1269 standards. Output varies by model application (Renault TIS Doc. RTIS-R9A).
Renault Technical Information System (TIS): Docs RTIS-R9A
Renault Service Information Bulletins (SIB): REN-SIB-18-03
VCA Type Approval Database (VCA/EMS/9876)
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.
Locate the engine code stamped on a flat machined surface on the front face of the cylinder block, near the alternator (Renault TIS RTIS-R9A). The code "843" will be clearly visible. Visually, it can be identified by its compact size (3-cylinder), black plastic rocker cover, and the presence of an AdBlue tank filler cap near the fuel filler. Critical differentiation from the larger 1.5 dCi (K9K) engine: The 843 is a 3-cylinder unit with a VGT turbo, while the K9K is a 4-cylinder with a fixed-geometry turbo. Service parts, particularly the turbo and injectors, are not interchangeable.
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.
Find answers to most commonly asked questions about RENAULT 843.
Comprehensive technical documentation and regulatory references
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