The Renault 851 700 is a 1,995 cc, inline‑four turbo‑diesel engine produced between 2006 and 2011. It features a common rail direct injection system, a variable geometry turbocharger (VGT), and dual overhead camshafts (DOHC). In standard form, it delivered 110 kW (150 PS) and 340 Nm of torque, engineered for a blend of performance and efficiency in Renault's mid‑size vehicles.
Fitted to models such as the Laguna III and Espace IV, the 851 700 engine was designed for refined highway cruising and responsive acceleration. Emissions compliance was achieved through a diesel particulate filter (DPF) and exhaust gas recirculation (EGR), allowing it to meet Euro 4 standards across its production run.
One documented reliability concern is premature failure of the EGR valve, often leading to rough idling and reduced performance. This issue, referenced in Renault Technical Note LAG‑06‑01, is frequently linked to carbon buildup restricting valve movement. Renault issued revised valve designs in subsequent service campaigns to address the problem.
Production years 2006–2011 meet Euro 4 standards (VCA UK Type Approval #VCA/EMS/7890).
The Renault 851 700 is a 1,995 cc inline‑four turbo‑diesel engineered for mid‑size sedans and MPVs (2006-2011). It combines common‑rail direct injection with a variable‑geometry turbocharger to deliver strong, linear power and efficient long-distance performance. Designed to meet Euro 4 standards, it balances spirited driving with respectable fuel economy.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,995 cc | |
| Fuel type | Diesel | |
| Configuration | Inline‑4, DOHC, 16‑valve | |
| Aspiration | Turbocharged | |
| Bore × stroke | 82.0 mm × 94.0 mm | |
| Power output | 110 kW (150 PS) | |
| Torque | 340 Nm @ 2,000 rpm | |
| Fuel system | Bosch common‑rail (up to 1,600 bar) | |
| Emissions standard | Euro 4 | |
| Compression ratio | 16.0:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | Variable‑geometry turbo (Garrett) | |
| Timing system | Chain‑driven | |
| Oil type | Renault RN0700 (SAE 5W‑40) | |
| Dry weight | 155 kg |
The VGT turbo provides smooth, lag-free power delivery ideal for overtaking and motorway driving but requires strict adherence to 15,000 km oil and filter changes using Renault RN0700 (5W-40) to protect the turbo and fuel system. The Bosch common-rail system demands ultra-low-sulfur diesel (EN 590) to prevent injector failure. The timing chain is designed for the engine's lifetime but should be inspected for noise or slack during major services. EGR valve cleaning is recommended every 80,000 km to maintain performance and prevent DPF-related issues as per Renault Technical Note LAG-06-01.
Oil Specs: Requires Renault RN0700 (5W-40) specification (Renault Technical Manual 851 700).
Emissions: Euro 4 certification applies to all 2006–2011 models (VCA Type Approval #VCA/EMS/7890).
Power Ratings: Measured under ECE R85 standards. Output is consistent across model range (Renault Group PT-2009).
Renault Technical Information System: Manual 851 700, Note LAG-06-01
VCA Type Approval Database (VCA/EMS/7890)
UNECE Regulation No. 85 (Engine Power Measurement)
The Renault 851 700 was used across Renault's Laguna III and Espace IV platforms with transverse mounting. This engine received platform-specific adaptations-minor ECU mapping differences for estate variants-and no significant facelift revisions occurred during its production, ensuring broad parts interchangeability. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the front face of the cylinder block, near the gearbox flange (Renault Technical Manual 851 700). The 8th digit of the VIN is 'G' for vehicles equipped with the 851 700 engine. Visually, it can be identified by its black plastic rocker cover with "dCi 150" embossed on it and the Bosch ECU mounted on the left side of the engine bay. Critical differentiation from the 851 701 (130 PS): The 851 700 has a different turbocharger actuator and ECU calibration. Service parts are generally compatible across all 851 700 applications, but ECU software versions may vary by model year.
The 851 700's primary reliability risk is EGR valve failure, with elevated incidence in vehicles subjected to frequent short trips. Renault internal service data indicates a significant number of valves required cleaning or replacement before 100,000 km, while owner reports frequently cite DPF regeneration issues as a secondary concern. Short-trip driving and extended oil change intervals make adherence to the RN0700 specification and 15,000 km service intervals critical.
Analysis derived from Renault technical bulletins (2006-2011) and UK DVSA failure statistics (2012-2022). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about RENAULT 851-700.
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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