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2018 Acura RLX Overview, Reviews, Ratings & Specs

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Simon A | March 31, 2025
The 2018 Acura RLX is a mid-size luxury sedan, representing Acura's flagship model. Produced from 2014 to 2020, the RLX aimed to offer a comfortable and technologically advanced alternative in its class. Key trims included the base RLX and the RLX Sport Hybrid. Pricing ranged from approximately $55,000 to $66,000 when new. The RLX stood out with its advanced technology, particularly the Sport Hybrid's innovative all-wheel-drive system, and its focus on a smooth and quiet ride.
The Good

The 2018 Acura RLX offered a blend of performance and luxury. The Sport Hybrid delivered responsive acceleration and confident handling, appealing to those seeking driving enjoyment. Its reputation for reliability and a comfortable, quiet cabin made it a practical choice. The sophisticated design and advanced technology also provided emotional appeal, while its competitive price point offered strong value.

The Bad

The 2018 Acura RLX's weaknesses included a somewhat polarizing design that didn't resonate with all buyers. Some considered the interior styling less modern compared to rivals. The infotainment system could also be cumbersome to use. Resale value was another concern, as the RLX depreciated more quickly than some competitors. Potential buyers should check for proper hybrid system functionality in the Sport Hybrid model.

2018 Acura RLX: Quick Overview

2018 Acura RLX Key Specs:

  • Engine Options:
    • 3.5L V6 (RLX)
    • 3.5L V6 + 3 Electric Motors (RLX Sport Hybrid)
  • Horsepower:
    • 310 hp (RLX)
    • 377 hp (RLX Sport Hybrid - combined)
  • Fuel Economy:
    • RLX: 20 mpg city / 29 mpg highway
    • RLX Sport Hybrid: 28 mpg city / 29 mpg highway
  • 0–60 Times:
    • RLX: Around 6.4 seconds
    • RLX Sport Hybrid: Around 5.4 seconds
  • Towing Capacity: Not recommended for towing.
  • Trim-Level Features:
    • RLX (Base): Leather upholstery, sunroof, navigation, AcuraWatch safety suite (adaptive cruise control, lane keeping assist, forward collision warning), tri-zone climate control, premium audio system.
    • RLX Sport Hybrid: All base features plus Sport Hybrid powertrain, Super Handling All-Wheel Drive (SH-AWD), head-up display, parking sensors, surround-view camera system, upgraded leather, ventilated front seats.

2018 Acura RLX Specifications

Vehicle Information
Year 2018
Make Acura
Model RLX
Trim -
Style -
Type Sedan
Category Mid-Size Car
Manufacturing Details
Made In Japan
Manufacturing City SAYAMA
Dimensions
Doors 4-Door
Curb Weight 3955 pounds
Gross Vehicle Weight Rating -
Overall Height -
Overall Length -
Overall Width -
Wheelbase Length -
Standard Seating 5
Engine & Performance
Engine J35Y4
Engine Size 3.5L
Engine Cylinders 6
Transmission 10A
Transmission Type Automatic
Transmission Speeds 10-Speed
Drivetrain Front-Wheel Drive
Additional Features
Anti-Brake System Standard
Steering Type -
Pricing
Manufacturer Suggested Retail Price (MSRP) $54,900
Invoice Price $50,947
Delivery Charges $965

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What Problems Does the 2018 Acura RLX Have?

Frequently reported problems for the 2018 Acura RLX are relatively few compared to some other vehicles in its class, contributing to its good reliability reputation. However, some owners have reported issues with the infotainment system, including slow response times and occasional glitches. The Sport Hybrid model, with its more complex powertrain, has the potential for more complex issues, although these are not widespread. Specifically, potential long-term reliability concerns relate to the hybrid battery and associated electrical components.

While there were no major widespread recalls specifically targeting the 2018 model year, it's always prudent to check the National Highway Traffic Safety Administration (NHTSA) website for any open recalls affecting the vehicle's VIN. General Acura reliability is typically good, but preventative maintenance, particularly regarding the hybrid system in the Sport Hybrid, is crucial. Some earlier model years (2014-2017) of the RLX had reported issues with the automatic emergency braking system, so checking the function of this system on a used 2018 model is advisable. Regular maintenance, including fluid changes, is essential for long-term reliability, as with any vehicle. Overall, the 2018 RLX is considered relatively reliable, but pre-purchase inspection by a qualified mechanic is always recommended.

How long will the 2018 Acura RLX last?

With proper maintenance, a 2018 Acura RLX can easily reach 200,000 miles or more. A well-maintained RLX, driven an average of 12,000-15,000 miles per year, could provide reliable service for 13-15 years. Long-term durability is a strong point, with the engine and transmission proving robust. However, potential weaknesses include the infotainment system, which may become outdated or suffer from software glitches over time. For the Sport Hybrid model, battery health is a long-term concern; replacement can be costly, although the lifespan is typically 8-10 years or more. Regular fluid changes and adherence to the maintenance schedule are key to maximizing longevity.

What Technology & Safety Features are Included?

The 2018 Acura RLX comes standard with a good array of technology and safety features. The infotainment system features a dual-screen setup, offering navigation, audio controls, and vehicle settings. Entertainment features include a premium audio system. Driver-assistance features, bundled under the AcuraWatch suite, are standard and include adaptive cruise control, lane keeping assist, forward collision warning with automatic emergency braking, and road departure mitigation.

The Sport Hybrid trim adds features like a head-up display and a surround-view camera system for enhanced visibility. Optional features were limited, as the RLX came well-equipped.

Safety is a priority in the RLX. It typically earned good crash-test ratings from the Insurance Institute for Highway Safety (IIHS) and the National Highway Traffic Safety Administration (NHTSA). These ratings, which should be verified for the specific model year on the respective agency websites, reflected the vehicle's strong structural design and comprehensive safety equipment. The AcuraWatch suite contributes significantly to accident prevention, making the RLX a safe and technologically advanced choice.

What Colors Options are Available?

Exterior Colors
Majestic Black Pearl
Lunar Silver Metallic
Modern Steel Metallic
Brilliant Red Metallic
White Diamond Pearl
Kona Coffee Metallic
Interior Colors
Ebony
Graystone
Espresso

2018 Acura RLX Prices and Market Value

The 2018 Acura RLX had a starting MSRP of around $55,000 for the base model and approximately $66,000 for the Sport Hybrid. Current used market prices range significantly depending on condition, mileage, and trim, typically falling between $20,000 and $35,000. The RLX experienced relatively high depreciation compared to some competitors. Factors affecting resale value include mileage, condition, accident history, and demand for the Acura brand in the used car market. The Sport Hybrid model may hold its value slightly better due to its advanced technology and all-wheel-drive system.

2018 Acura RLX Cost of Ownership

Insurance costs for the 2018 Acura RLX are generally moderate for its class. Fuel costs vary depending on the model, with the Sport Hybrid offering better city fuel economy. Maintenance costs are typical for a luxury vehicle. Repairs can be more expensive, especially for the Sport Hybrid's complex powertrain. Overall, the RLX is not the most economical luxury car to own, but its reliability helps mitigate potential repair costs. Consider the Sport Hybrid's potential battery replacement cost in long-term ownership calculations.

2018 Acura RLX Fuel Efficiency

Fuel Type Gasoline
Fuel Capacity 23 gallons
City Mileage 20 miles/gallon
Highway Mileage 29 miles/gallon

2018 Acura RLX Safety Rating

NHTSA
Overall Rating
Overall Frontal Star Rating
Side Overall Star Rating
Overall Rollover Star Rating
Combined Front Seat Rating
Combined Rear Seat Rating
Overall Frontal Star Rating
Frontal Barrier Star Ratings Not Tested
Overall Side Star Rating
Side Barrier Star Ratings
Side Pole Star Rating
Combined Side Barrier And Side Pole Star Ratings Not Tested
Rollover Resistance Star Rating

2018 Acura RLX Recalls & Defects

Fuel System, Gasoline:delivery:fuel Pump
Recall date 2023-12-18
Recall no. 23v858000
Source NHTSA
Summary Honda (American Honda Motor Co.) IS Recalling Certain 2013-2023 Honda Accord, Civic Coupe, Civic Sedan, Civic Hatchback, Civic Type R, Cr-V, Hr-v, Ridgeline, Odyssey, Acura Ilx, Mdx, MDX Hybrid, Rdx, Rlx, Tlx, 2019-2022 Honda Insight, Passport, 2020 Honda Cr-v Hybrid, 2018-2019 Honda Clarity Phev, Fit, and 2015-2020 Honda Accord Hybrid, Pilot, Acura NSX Vehicles. THE Fuel Pump Inside THE Fuel Tank MAY Fail.
Consequence Fuel Pump Failure CAN Cause AN Engine Stall While Driving, Increasing THE Risk OF A Crash.
Remedy Dealers Will Replace THE Fuel Pump Module, Free OF Charge. Owner Letters Were Mailed September 6, 2024. Owners MAY Contact Honda Customer Service AT 1-888-234-2138. Honda's Numbers FOR This Recall ARE KGC and Kgd. This Recall IS AN Expansion OF Nhtsa Recall Numbers 21v-215 and 20v-314.
Notes Owners MAY Also Contact THE National Highway Traffic Safety Administration Vehicle Safety Hotline AT 1-888-327-4236 (Tty 1-800-424-9153), or GO TO Www.nhtsa.gov.

2018 Acura RLX Insurance

Insurance for a 2018 Acura RLX is moderately priced, reflecting its status as a Sedan with strong safety ratings and
reasonable repair costs.

How Does the 2018 Acura RLX Compare to Other Sedan?

The 2018 Acura RLX competes with luxury sedans like the Lexus ES, BMW 5 Series, Mercedes-Benz E-Class, and Audi A6. In terms of performance, the RLX Sport Hybrid is competitive with its rivals, offering strong acceleration and handling. However, the base RLX's performance is less compelling. Feature-wise, the RLX offers a comprehensive suite of standard equipment, making it a good value proposition. Reliability is a strong point for Acura, often surpassing its European competitors. Price-wise, the RLX is generally more affordable than the German rivals.

The Lexus ES is a similar alternative, prioritizing comfort and reliability, but with a less sporty driving experience. The BMW 5 Series and Mercedes-Benz E-Class offer more engaging driving dynamics and luxurious interiors but come at a higher price. The Audi A6 provides a blend of style, technology, and performance.

Depending on priorities, the Lexus ES might be a better choice for those prioritizing comfort and reliability above all else. For those seeking a sportier driving experience and more prestigious badge, the BMW 5 Series or Mercedes-Benz E-Class are better alternatives, but be prepared to pay more.

Ranks #1486 Sedan

1 2023 Toyota Camry (5.0★)
2 2023 Honda Accord (0.0★)
3 2023 Lexus ES (0.0★)
4 2024 Subaru Legacy (5.0★)
5 2022 Mazda MX-30 (4.0★)
6 2024 BMW M3 (0.0★)
7 2023 Ford Mustang (5.0★)
8 2023 Mercedes-Benz AMG GT (0.0★)
9 2023 Audi A3 (0.0★)
10 2023 Chevrolet Camaro (5.0★)
11 2023 Hyundai Elantra Hybrid (0.0★)
12 2023 Nissan Altima (4.0★)
1486 2018 Acura RLX (0.0★)

Final Verdict: Is the 2018 Acura RLX a Good Sedan?

The 2018 Acura RLX is ideal for buyers seeking a comfortable, reliable, and well-equipped luxury sedan at a competitive price. It's especially well-suited for those who value technology and a smooth ride. Whether it's worth buying depends on individual needs and priorities. Given the RLX's depreciation, buying used offers the best value. The Sport Hybrid trim is the more compelling option, offering superior performance and all-wheel drive. If a luxurious interior and prestigious badge are top priorities, competitors might be more appealing. However, for a reliable and well-equipped luxury sedan at a reasonable price, the 2018 Acura RLX is a solid choice.

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Simon A

Simon is a contributor to VinCheck, where he provides articles and reviews on various automotive topics. His work focuses on delivering accurate and up-to-date information about used cars, helping readers make informed decisions.