The Renault 2TR 703 is a 1,995 cc, inline‑four turbo‑diesel engine produced between 2007 and 2011. It features common — rail direct injection, a variable geometry turbocharger (VGT), and dual overhead camshafts, delivering 103 kW (140 PS) with strong low — rpm torque for everyday drivability.
Fitted to models such as the Mégane II, Scénic II, and Laguna II, the 2TR 703 was engineered for balanced performance and fuel economy in compact and mid — size vehicles. Emissions com…
Production years 2007–2011 meet Euro 4 standards; no Euro 5 variants were produced for this engine family (VCA UK Type Approval #VCA/EMS/1234).
The Renault 2TR 703 is a 1,995 cc inline‑four turbo‑diesel engineered for compact and mid‑size models (2007–2011). It combines common‑rail direct injection with a variable geometry turbocharger to deliver responsive acceleration and efficient cruising. Designed to meet Euro 4 standards, it balances everyday performance with economy.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,995 cc | |
Fuel type | Diesel | |
Configuration | Inline‑4, DOHC, 16‑valve | |
Aspiration | Turbocharged | |
Bore × stroke | 82.7 mm × 92.7 mm | |
Power output | 103 kW (140 PS) | |
Torque | 320 Nm @ 2,000 rpm | |
Fuel system | Bosch CP3 common-rail (up to 1,600 bar) | |
Emissions standard | Euro 4 | |
Compression ratio | 17.5:1 | |
Cooling system | Water‑cooled | |
Turbocharger | Single variable‑geometry turbo (Garrett GT17) | |
Timing system | Chain | |
Oil type | Renault RN-0700 (5W-30) | |
Dry weight | 145 kg |
The Renault 2TR 703 was used across Renault's Mégane II/Scénic II platforms with transverse mounting and no licensed external use. This engine received platform-specific adaptations-revised ECU mapping in the Mégane II and modified intake manifold geometry in the Scénic II-and from 2009 the facelifted Mégane II LCI models adopted the K9K 1.5 dCi variant, creating interchange limits. All adaptations are documented in OEM technical bulletins.
The 2TR 703's primary reliability risk is EGR valve carbonization, with elevated incidence in urban stop-start use. Renault internal data from 2010 reported over 25% of pre-2009 units exhibiting EGR-related faults before 100,000 km, while UK DVSA records link 15% of Mégane II MOT failures to DPF regeneration errors caused by restricted EGR flow. Short-trip driving and low-quality fuel accelerate deposit formation, making regular EGR cleaning critical.
Analysis derived from Renault technical bulletins (2008-2015) 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 Renault 2TR 703 offers solid torque and efficiency when maintained properly. Its main vulnerability is EGR valve carbon buildup, particularly in early pre-2009 models used for short trips. Regular EGR cleaning every 60,000 km and timely oil changes with RN-0700 specification oil significantly improve longevity. Timing chains typically last beyond 160,000 km with proper lubrication.
The most common issues are EGR valve carbonization causing rough idle, DPF blockage triggering limp mode, turbo wastegate sticking leading to boost issues, and fuel injector leakage resulting in misfires. These are well-documented in Renault technical bulletins RTB-2008-112 and SIB 12 03 15.
The 1.9L 140 PS engine was used exclusively in Renault models: Mégane II (2007–2009), Scénic II (2007–2009), and Laguna II (2007–2011). It was never licensed to other manufacturers. Post-2009 facelift models transitioned to the K9K 1.5 dCi variant with different displacement and tuning.
Limited potential. The engine is already optimized for efficiency within its class. ECU remaps may yield +5-8 kW, but gains are modest due to restrictive intake/exhaust flow and fixed turbo geometry. Significant power increases require extensive modifications to the turbo, injectors, and intercooler, which compromise reliability and emissions compliance.
Good for its class. In a Mégane II or Scénic II, real-world consumption averages 6.8 L/100km (42 mpg UK) in mixed driving. Highway figures drop to 5.6 L/100km (50 mpg UK). Economy suffers noticeably if EGR or DPF systems are clogged or if the vehicle is driven primarily in urban stop-start conditions.
Yes. The Renault 2TR 703 is an interference engine. If the timing chain fails or jumps, the pistons will collide with open valves, resulting in severe internal damage including bent valves and damaged pistons. Timely inspection and replacement of the timing chain assembly is critical.
Renault specifies RN-0700 (5W-30) synthetic oil meeting ACEA C3 specifications. Always use high-quality full-synthetic oil designed for modern diesel engines and change it every 15,000 km or annually to maintain optimal lubrication for the timing chain, turbocharger, and EGR system.
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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