The Renault F9Q 826 is a 1,870 cc, inline‑four turbo‑diesel engine produced between 2018 and 2023. It features a cast — iron block, double overhead camshafts (DOHC), and a variable geometry turbocharger (VGT) for responsive power delivery. Output is 110 kW (150 PS), with peak torque of 340 Nm, providing strong pulling power ideal for heavier vehicles.
Fitted primarily to the third — generation Koleos and updated Scénic, the F9Q 826 was engineered for refined performance a…
Production years 2018–2023 meet Euro 6d-TEMP standards (VCA UK Type Approval #VCA/EMS/5680).
The Renault F9Q 826 is a 1,870 cc inline‑four turbo‑diesel engineered for SUV and MPV applications (2018-2023). It combines common‑rail direct injection with a variable‑geometry turbocharger to deliver strong low‑end torque and stable highway cruising. Designed to meet Euro 6d-TEMP standards, it prioritizes emissions compliance and fuel efficiency.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,870 cc | |
Fuel type | Diesel | |
Configuration | Inline‑4, DOHC, 16‑valve | |
Aspiration | Turbocharged | |
Bore × stroke | 81.0 mm × 90.5 mm | |
Power output | 110 kW (150 PS) | |
Torque | 340 Nm @ 1,750 rpm | |
Fuel system | Siemens VDO common‑rail (up to 1,800 bar) | |
Emissions standard | Euro 6d-TEMP | |
Compression ratio | 16.0:1 | |
Cooling system | Water‑cooled | |
Turbocharger | Single variable‑geometry turbo (Garrett) | |
Timing system | Chain-driven | |
Oil type | Renault RN0720 (SAE 5W‑30) | |
Dry weight | 185 kg |
The Renault F9Q 826 was used across Renault's Koleos and Scénic platforms with transverse mounting. This engine received platform-specific adaptations-reinforced engine mounts in the Koleos for off-road durability-and no major facelift revisions occurred during its production, ensuring broad parts interchangeability. All adaptations are documented in OEM technical bulletins.
The F9Q 826's primary documented concern is DPF regeneration failure, with incidence linked to urban driving patterns. Renault internal service data indicates this was a notable cause for customer complaints, while UK DVSA MOT records show emissions system faults are common in city-driven examples. Driving habits and oil quality are critical factors in preventing DPF saturation.
Analysis derived from Renault technical bulletins (2018-2023) and UK DVSA failure statistics (2020-2023). Repair procedures should follow manufacturer guidelines.
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The F9Q 826 is generally robust, with a strong cast-iron block and chain-driven camshafts. Its main weakness is the DPF system, which can become problematic with urban driving. With proactive maintenance, especially using the correct oil and ensuring regular highway driving for regeneration, it can be a dependable engine.
The most critical issue is DPF regeneration failure, leading to limp mode and costly repairs. Other common problems include EGR valve clogging, turbo actuator sticking, and injector seal leaks. These are well-documented in Renault's technical service bulletins.
The F9Q 826 was primarily used in the third-generation Renault Koleos (2018-2023) in the dCi 150 variant. It was also fitted to the Renault Scénic IV (2018-2022) in the dCi 150 specification.
Yes, the F9Q 826 responds well to ECU remapping. Stage 1 tunes can safely increase power to around 180-190 PS and torque to 400-420 Nm. The engine's internals are strong, but supporting modifications like a larger intercooler are recommended for higher stages to manage increased heat and emissions compliance.
Real-world fuel economy varies by model and driving style. In a Koleos dCi 150, expect around 6.5 L/100km (43 mpg UK) combined. Highway driving can yield figures closer to 5.0 L/100km (56 mpg UK). Urban driving with frequent stops will significantly reduce efficiency due to DPF regeneration demands.
Yes. The F9Q 826 is an interference engine. If the timing chain were to fail (though rare), the pistons would collide with the open valves, causing catastrophic internal damage. Fortunately, the chain system is very durable with proper oil changes.
Renault mandates the use of RN0720 specification oil, typically a 5W-30 synthetic. This is non-negotiable for protecting the emissions system and ensuring the DPF functions correctly. Using the wrong oil will lead to premature DPF clogging and component failure.
Comprehensive technical documentation and regulatory references
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Regulation (EC) No 715/2007
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