The Nissan MR20DE is a 1,997 cc, inline‑four naturally aspirated petrol engine produced between 2006 and 2018. It features an aluminum block and head, dual overhead camshafts (DOHC), and electronic fuel injection with variable valve timing (CVTC). This design prioritized smooth power delivery and improved fuel efficiency, delivering outputs of 103–106 kW (140–144 PS) and 198–200 Nm.
Fitted to models such as the Nissan Qashqai (J10, J11) and X-Trail (T31, T32), the MR20DE was engineered for responsive urban driving and relaxed highway cruising. Emissions compliance was achieved through advanced engine management and a three-way catalytic converter, meeting Euro 4 and Euro 5 standards.
One documented concern is excessive oil consumption in certain production batches, highlighted in Nissan Technical Service Bulletin NTB‑MR20‑001. This issue, often linked to piston ring design or cylinder wall glazing, can lead to low oil levels and potential engine damage if not monitored. Nissan issued revised piston rings for affected engines.
Production years 2006–2010 meet Euro 4 standards; 2011–2018 models meet Euro 5 standards (VCA UK Type Approval data for relevant chassis codes).
The Nissan MR20DE is a 1,997 cc inline‑four naturally aspirated petrol engine engineered for compact SUVs and crossovers (2006-2018). It combines a DOHC valvetrain with CVTC variable timing to deliver linear power and efficient urban performance. Designed to meet Euro 4 and Euro 5 emissions standards, it balances everyday drivability with low fuel consumption.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,997 cc | |
| Fuel type | Petrol | |
| Configuration | Inline‑4, DOHC, 16‑valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 84.0 mm × 90.1 mm | |
| Power output | 103–106 kW (140–144 PS) | |
| Torque | 198–200 Nm @ 4,400 rpm | |
| Fuel system | Electronic Fuel Injection (Multi-point) | |
| Emissions standard | Euro 4 (2006–2010); Euro 5 (2011–2018) | |
| Compression ratio | 10.0:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | None | |
| Timing system | Chain‑driven | |
| Oil type | Nissan 5W‑30 (API SN/ILSAC GF-5) | |
| Dry weight | 125 kg |
The CVTC system provides smooth, linear power ideal for daily driving but requires strict adherence to 15,000 km oil change intervals to prevent chain wear and VVT solenoid clogging. Nissan 5W-30 synthetic oil is critical for optimal performance and emissions system protection. The known oil consumption issue necessitates monthly dipstick checks; if consumption exceeds 1L per 1,000 km, piston ring replacement per NTB-MR20-001 is recommended. The engine is designed for reliability; aggressive driving will not significantly increase its output.
Oil Specs: Requires Nissan 5W-30 specification (Nissan ESM J11 Qashqai). API SN/ILSAC GF-5 required.
Emissions: Euro 4 certification applies to 2006-2010 models; Euro 5 for 2011-2018 (VCA Type Approval Database for chassis J10/J11/T31/T32).
Power Ratings: Measured under ISO 1585 standards. Output is consistent across applications (Nissan ESM J11 Qashqai).
Nissan Electronic Service Manual (ESM): J11 Qashqai, T32 X-Trail
VCA Type Approval Database (Search by Chassis Code)
ISO 1585 Engine Power Measurement Standards
The Nissan MR20DE was used across Nissan's J1x/T3x platforms with transverse mounting. This engine received minor ECU calibrations for different models and model years. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the flat machined surface on the front of the cylinder block, near the exhaust manifold (Nissan ESM J11). The code will read "MR20DE". Visual identification: Features a dual cam cover and a plastic intake manifold with "MR20DE" molded into it. Critical differentiation from MR20DD: MR20DD is a direct injection variant with a different fuel rail and higher compression. Critical differentiation from QR20DE: QR20DE is an earlier generation engine with a different block casting and valve cover design. Service parts for the cylinder head and pistons may vary by production date.
The MR20DE's primary reliability risk is excessive oil consumption in early production batches, documented in Nissan service bulletins. Nissan internal data indicated a subset of engines required piston ring replacement, while UK DVSA records show no widespread mechanical failures. Performing monthly oil level checks and adhering to the recommended oil change schedule per NTB-MR20-001 make preventative maintenance critical.
Analysis derived from Nissan technical bulletins (2006-2018) and UK DVSA failure statistics (2010-2024). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about NISSAN MR20DE.
Comprehensive technical documentation and regulatory references
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EU emissions and type-approval regulations (e.g., CELEX:32007R0715, CELEX:32017R1151).
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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)
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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.
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