The Renault F9Q 804 is a 1,870 cc, inline‑four turbo‑diesel engine produced between 2012 and 2018. It features a cast iron block, aluminium cylinder head, double overhead camshafts (DOHC), and a variable geometry turbocharger (VGT) for responsive power delivery. Output is rated at 96 kW (130 PS), with peak torque of 320 Nm.
Fitted primarily to the Mégane III facelift and Scénic III, the F9Q 804 was engineered for a balance of refinement, mid — range torque, and improved fuel…
Production years 2012–2018 meet Euro 5 standards (VCA UK Type Approval #VCA/EMS/5680).
The Renault F9Q 804 is a 1,870 cc inline‑four turbo‑diesel engineered for compact models (2012-2018). It combines common‑rail direct injection with a single variable‑geometry turbocharger to deliver strong mid‑range pull and efficient highway cruising. Designed to meet Euro 5 standards, it balances everyday performance with economy.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,870 cc | |
Fuel type | Diesel | |
Configuration | Inline‑4, DOHC, 16‑valve | |
Aspiration | Turbocharged | |
Bore × stroke | 80.0 mm × 93.0 mm | |
Power output | 96 kW (130 PS) | |
Torque | 320 Nm @ 1,750 rpm | |
Fuel system | Bosch CP3 common‑rail (up to 1,600 bar) | |
Emissions standard | Euro 5 | |
Compression ratio | 16.0:1 | |
Cooling system | Water‑cooled | |
Turbocharger | Single variable‑geometry turbo (Garrett) | |
Timing system | Chain‑driven | |
Oil type | Renault RN0700 / RN0710 (SAE 5W‑30) | |
Dry weight | 165 kg |
The Renault F9Q 804 was used across Renault's C platform vehicles with transverse mounting. This engine received no major platform-specific adaptations, ensuring broad parts interchangeability with the earlier F9Q 762, though ECU software is specific to the model and year. All adaptations are documented in OEM technical bulletins.
The F9Q 804's primary reliability risk is EGR cooler failure, with elevated incidence in vehicles subjected to frequent short trips or overheating events. Renault internal data indicated a notable failure rate, while UK DVSA records show DPF-related issues are common in urban vehicles. Using correct fuel and oil, and ensuring regular DPF regeneration, are critical for longevity.
Analysis derived from Renault technical bulletins (2012-2018) and UK DVSA failure statistics (2015-2023). 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 F9Q 804 is generally robust with strong torque, but its longevity depends on maintenance. The EGR cooler is a known weak point, especially if the vehicle is overheated or used for frequent short trips. Using correct Renault-spec oil (RN0700/0710) and ensuring regular DPF regeneration are crucial for achieving high mileage without major issues.
The most frequent issues are EGR cooler failure leading to coolant loss, high-pressure fuel pump failure causing stalling, DPF clogging from short trips, and turbo actuator faults leading to boost problems. These are well-documented in Renault service notes and owner reports.
The F9Q 804 1.6 dCi engine was primarily used in the facelifted Mégane III (2012-2016) and Scénic III (2012-2016). It was a direct successor to the F9Q 762, offering the same power output but with updated ECU calibration for specific model years.
Yes, the F9Q 804 responds well to ECU remapping. Stage 1 tunes can safely increase power to around 150-160 PS and torque to 350-370 Nm. The standard internals are quite strong. However, aggressive tuning can exacerbate existing weaknesses like the EGR cooler or fuel pump, so supporting modifications are recommended.
Official combined figures are approximately 4.5-4.8 L/100km (approx. 59-63 mpg UK), depending on the model. Real-world mixed driving typically yields 5.5-6.5 L/100km (43-51 mpg UK). Highway cruising can achieve under 4.5 L/100km (63+ mpg UK), while city driving will be higher.
Yes. The F9Q 804 is an interference engine. If the timing chain fails or jumps, the pistons will collide with the open valves, causing catastrophic internal engine damage. While chain failure is less common than on some contemporaries, it underscores the importance of using correct oil and adhering to service schedules.
Renault mandates the use of oil meeting their RN0700 or RN0710 specification, typically a 5W-30 fully synthetic grade. Using the correct oil is vital for protecting the turbocharger, timing chain, and especially the high-pressure fuel pump. Change intervals should not exceed 20,000 km or 12 months.
Comprehensive technical documentation and regulatory references
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RENAULT Official Site
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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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