LEXUS U661E Automatic Transmission 2.0L

( Manufacturer Part Number: U661E ), ( Type: Automatic Transmission ), ( Manufacturer Warranty: 2 Months ), ( Oe/oem Part Number: 8ar, 8ar-fts ), ( Vintage Part: No ), ( Country Of Origin: Japan )

Review LEXUS 2.0l Automatic Transmission fits NX300 TURBO 2018–2021

The **Lexus U661E 2.0L Turbocharged Engine** found in the **NX300 (2018 2021)** represents a sophisticated fusion of cutting-edge automotive engineering and refined luxury, embodying Lexus s commitment to performance, efficiency, and quiet elegance. This compact yet potent inline-four powerplant, developed in collaboration with Toyota s advanced engineering teams, delivers a compelling blend of responsiveness and sophistication, making it the heart of one of Lexus s most dynamic crossover models. At its core, the **U661E** is a **2.0-liter turbocharged gasoline engine** with a **direct-injection system**, producing a robust **228 horsepower** and **258 lb-ft of torque**, figures that strike an ideal balance between spirited acceleration and practical daily usability. The engine s **variable valve timing (VVT-iW)** technology optimizes airflow at all RPM ranges, ensuring seamless power delivery whether cruising on the highway or navigating city streets, while the **high-pressure direct injection** enhances efficiency and reduces emissions without compromising performance.

What truly sets the **U661E apart** is its **adaptive turbocharging system**, which dynamically adjusts boost pressure to prevent lag while maintaining smooth, linear throttle response a hallmark of Lexus s precision tuning. The engine s **aluminum cylinder block and head**, combined with **multi-layer steel laminates** in critical areas, contribute to both lightweight construction and exceptional durability, reducing friction and improving thermal efficiency. Additionally, the **integrated starter-generator (ISG)** in the **2020 and 2021 models** further enhances fuel economy by recapturing energy during deceleration, a feature that aligns with Lexus s commitment to hybrid-like efficiency without the complexity of a full hybrid system. The **6-speed automatic transmission**, paired with a **torque converter with lockup clutch**, ensures seamless gear shifts, while the **multi-mode sport mode** allows drivers to tailor the driving experience whether for spirited overtaking or relaxed highway cruising.

Beyond its mechanical prowess, the **U661E s integration with Lexus s advanced driver-assistance systems (ADAS)** such as **Pre-Collision System with Pedestrian Detection, Lane Departure Alert, and Adaptive Cruise Control** elevates it beyond a mere powerplant into a cornerstone of modern safety and convenience. The engine s **low-vibration design** and **refined acoustic tuning** contribute to the NX300 s reputation for a near-silent cabin, a hallmark of Lexus s legendary refinement. Whether accelerating from a standstill with eager precision or maintaining steady power under load, the **U661E** exemplifies Lexus s ability to merge performance with luxury, offering an engaging yet unobtrusive driving experience that appeals to both enthusiasts and discerning everyday drivers. With its **durability, efficiency, and adaptability**, this engine ensures the NX300 remains a standout choice in the compact luxury crossover segment.

### **Pros and Cons of Buying a Lexus U661E (2018 2021) 2.0L Turbo (NX300)**

1. **Reliability and Brand Reputation** Lexus is known for long-lasting engines and transmissions, with the U661E (2.0L turbo) being a well-regarded powertrain. It shares components with Toyota s 2GR-FKS engine, which has a strong track record for durability.

2. **Good Fuel Efficiency** The 2.0L turbo engine delivers solid fuel economy, especially in hybrid models (though the NX300 is non-hybrid). Expect around **18 22 MPG combined** in city/highway driving, which is competitive for a turbocharged engine in its class.

3. **Smooth and Responsive Performance** The turbocharged 2.0L engine provides adequate power (around **205 220 hp**) for a compact SUV, offering brisk acceleration without excessive turbo lag. The automatic transmission (likely a 6-speed or 8-speed) is smooth and reliable.

4. **Comfortable Ride and Interior Quality** The NX300 features Lexus signature refined ride quality, with good sound insulation and a well-built cabin. The interior materials are premium, with attention to detail in ergonomics and driver comfort.

5. **Low Maintenance Costs** Lexus vehicles are generally cheaper to maintain than German or luxury rivals, with widely available parts and a strong dealer network. The 2.0L turbo engine is less prone to major issues compared to some competitors.

6. **Safety Features** Standard safety tech includes **Toyota Safety Sense (TSS) 2.0**, which includes pre-collision braking, lane-keeping assist, and adaptive cruise control. The NX300 also has a sturdy structure for its size.

7. **Resale Value** Lexus holds its value well, so even a used NX300 will retain a decent resale price compared to some rivals.

---

1. **Turbocharged Engine Concerns** While the 2.0L turbo is reliable, turbocharged engines can be more demanding on maintenance if not properly serviced. Key risks include:

- **Oil changes must be strict** (every 5,000 7,500 miles for synthetic) to prevent turbo failure.

- **Coolant system health** Some owners report issues with the **coolant pump or thermostat**, which can lead to overheating if neglected.

- **Carbon buildup** Turbocharged engines are prone to carbon deposits in intake valves, which can reduce performance if not addressed (requires a professional intake valve cleaning).

2. **Transmission Issues (Early Models)** Some 2018 2019 NX300s with the **6-speed automatic** have reported **rough shifting or delayed engagement**, though Lexus addressed some of these issues in later model years. The **8-speed transmission (2020 )** is smoother but may still have minor quirks.

3. **Infotainment System Limitations** The NX300 s **7-inch touchscreen** is functional but outdated compared to newer Lexus models. Navigation is basic, and Bluetooth connectivity can be finicky.

4. **Rear Seat Space** While adequate for short trips, the rear seats are **narrow and less comfortable** for three adults on long drives. Luggage space is decent but not exceptional.

5. **Higher Purchase Price Than Competitors** Used NX300s in this range (2018 2021) may cost more than similar-sized SUVs (e.g., Mazda CX-5, Subaru Forester) with naturally aspirated engines, even if the turbocharged engine is more powerful.

6. **Minor Noise and Vibration Issues** Some owners report **wind noise at highway speeds** and **engine cover vibrations** (especially on softer suspensions). The **2020 models** improved this slightly.

7. **Limited Off-Road Capability** The NX300 is not designed for serious off-roading; it has **no permanent 4WD** (only part-time) and a relatively low ground clearance.

---

### **Recommendation**

The **2018 2021 Lexus NX300 with the 2.0L turbo engine** is a **solid choice** for buyers who prioritize **reliability, comfort, and Lexus brand trustworthiness**. It offers a **good balance of performance, efficiency, and luxury** for a compact SUV, making it ideal for **daily driving, commuting, and light adventure use**.

However, **potential buyers should be mindful of maintenance requirements**, particularly **strict oil changes and coolant system checks**, to avoid turbo-related issues. The **transmission in early models (2018 2019) may need extra scrutiny**, while later models (2020 ) benefit from refinements.

#### **Who Should Buy It?**

**First-time Lexus buyers** looking for a reliable, low-maintenance SUV.

**Urban/suburban drivers** who want a smooth, efficient, and comfortable ride.

**Those who prioritize resale value** over cutting-edge tech.

**Owners who can commit to proper turbo maintenance** (oil changes, coolant checks).

#### **Who Should Avoid It?**

**Off-road enthusiasts** seeking serious capability.

**Buyers who dislike turbocharged engines** (higher maintenance risk).

**Those who need a spacious rear seat** for frequent long trips.

**People who want the latest infotainment features** (screen size and software are outdated).

If you **find a well-maintained 2020 2021 NX300 with the 8-speed transmission**, it is the **best choice** in this range due to improved transmission smoothness and minor refinements. **Get a pre-purchase inspection** to check for **turbo health, coolant system integrity, and transmission condition**.

For **better value**, consider a **2019 or newer Mazda CX-5 Turbo** or **Subaru Forester** if you re open to non-Lexus brands, as they offer similar performance with slightly lower maintenance costs. However, if **Lexus reliability and luxury** are your top priorities, the NX300 remains a **strong, practical option**.

Details:

All engines are compression tested before being shipped. Torque converter. Electronics, seals and accessories are NOT covered. Mileage: 42000 miles.

Cash on Delivery. Warranty: 90 day warranty after receiving item. Notes: ACTUAL ITEM PICTURES. Warranty on the engine block and head starts from receiving date.

Warranty does not cover shipping, Labour, Replacement or Other costs. PARTS INCULDED: Transmission. Charges related to the return of item must be prepaid by customer.

part #: u661e prices

• $279.99-$2495.00

specifications autotransmissionsgo:

• for models: Nx300, Turbo
• for makes: Lexus
• for years: 2018-2021
• mpn: U661e
• type: Automatic Transmission
• manufacturer warranty: 2 Months
• oe/oem part number: 8ar, 8ar-fts
• vintage part: No
• country of origin: Japan

offer autotransmissionsgo:

• quantity: 1
• started: January 31, 2026
• availability: In Stock
• options: Ship-to-home
• sold: 0

seller autotransmissionsgo:

• # reviews: 5376
• city: Dallas, Texas
• rating: 100.0%

payments autotransmissionsgo:

• other
• credit card: Visa
• wallet: Apple-pay

returns autotransmissionsgo:

• time: 30 Days
• paid by: Buyer
• policy: Returns Accepted

shipping autotransmissionsgo:

• class: Standard
• cost: $0.00
• transit: 4-10 Days
• service: Standard
• type: Fixed

general autotransmissionsgo:

• condition: Used
• Car Truck Parts Accessories > Transmission Drivetrain > Automatic Transmission

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