2.0L MR20DD Naturally Aspirated Engine Overview
The 2.0L MR20DD engine is the trusted 4-cylinder powertrain under the hood of the 2025 Nissan Sentra® car. Designed for daily efficiency and low-maintenance durability, this engine blends refined responsiveness with class-leading fuel economy. Featuring direct fuel injection, a high 11.2:1 compression ratio, and low-friction technologies, the MR20DD continues to power Nissan’s compact sedan lineup with smooth, reliable output.
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2025 Nissan Sentra®
Engine Specifications
| Engine Code | MR20DD |
| Displacement | 2.0 liters (1,997 cc) |
| Configuration | Inline 4-cylinder (I4) |
| Valvetrain | DOHC, 16-valve with CVTC |
| Fuel System | Direct Fuel Injection (DFI) |
| Aspiration | Naturally aspirated |
| Compression Ratio | 11.2:1 |
| Maximum Horsepower | 149 hp @ 6,400 rpm |
| Maximum Torque | 146 lb-ft @ 4,400 rpm |
| Redline | ~6,500 rpm |
| Fuel Type | Regular unleaded gasoline |
| Emissions Certification | LEV3-SULEV30 |
| Transmission | Xtronic CVT® |
| Drive Configuration | Front-Wheel Drive (FWD) |
| Engine Block/Head | Aluminum alloy |
MR20DD Engine Models
The 2.0L MR20DD engine is used exclusively in the Nissan Sentra from 2020 through 2025, forming the core of the 8th-generation B18 platform. It remains the sole engine option for all Sentra car trims.
Frequently Asked Questions: 2.0L MR20DD Engine
What engine is in the 2025 Nissan Sentra?
The 2025 Nissan Sentra is powered by the 2.0L MR20DD engine, a naturally aspirated inline-4 with direct fuel injection and continuously variable valve timing.
How much horsepower does the MR20DD engine make?
The MR20DD produces 149 horsepower at 6,400 rpm and 146 lb-ft of torque at 4,400 rpm, offering smooth, everyday power for city and highway driving.
Is the MR20DD engine turbocharged?
No. The MR20DD is a naturally aspirated engine, meaning it does not use a turbocharger. Its performance comes from high compression and fuel-efficient tuning.
What type of fuel does the MR20DD engine use?
The engine is designed to run on regular unleaded gasoline, keeping fuel costs low for everyday drivers.
Is the MR20DD engine fuel efficient?
Yes. With its direct injection system, high 11.2:1 compression ratio, and CVTC technology, the MR20DD is optimized for strong MPG and reduced emissions.
What transmission is paired with the MR20DD?
The 2.0L MR20DD is paired with Nissan’s Xtronic CVT®, a continuously variable transmission designed for smooth, efficient driving without traditional gear changes.
What is the redline of the MR20DD engine?
The redline is approximately 6,500 rpm, allowing for a wide usable powerband while maintaining efficiency.
Which Nissan vehicles use the MR20DD engine?
As of 2025, the Nissan Sentra is the only U.S. model that uses the MR20DD engine. It has powered the Sentra since the launch of the 8th-generation B18 platform in 2020.
Is the MR20DD engine reliable?
Yes. The MR20DD is built with aluminum construction, low-friction coatings, and modern emissions systems. It has a strong reputation for reliability, ease of maintenance, and long-term durability.
Why does the Sentra use the MR20DD instead of a turbocharged engine?
The MR20DD offers a proven balance of power, efficiency, and simplicity. It avoids the added complexity of a turbo while still delivering competitive horsepower for its class.