2018 Acura RLX (facelift 2017) Dimensions, Size & Specs

The curb weight of the 2018 Acura RLX facelift ranges from approximately 1804 kg (3978 lbs) to 1987 kg (4380 lbs), depending on the configuration and options. The heavier weight stems from its robust build and luxury equipment, contributing to a stable, comfortable ride, although it may result in moderate fuel consumption compared to lighter sedans. The weight distribution supports balanced handling characteristics for a smooth and controlled driving experience.

The 2018 Acura RLX facelift provides a luggage capacity of 405 liters (approximately 14.3 cubic feet). This amount of cargo space is quite adequate for typical daily errands or weekend trips, offering room for suitcases, shopping bags, or sports equipment. While not the largest trunk in its class, it delivers a practical balance of passenger comfort and cargo accommodation for a luxury full-size sedan.

The 2018 Acura RLX facelift features a ground clearance of 115 mm (4.5 inches), which is typical for low-slung luxury sedans prioritizing aerodynamics and handling precision. This clearance is sufficient for most urban driving conditions, including speed bumps and minor road imperfections, but it advises caution on very uneven or unpaved surfaces where low clearance might risk scraping the underbody.

The facelifted RLX is equipped with 19-inch rims sized 8.0J x 19 paired with tires sized 245/40 R19. These larger wheels and low-profile tires enhance the car's sporty appearance and cornering ability by reducing sidewall flex during aggressive driving. However, they may slightly reduce ride comfort compared to smaller wheels due to less tire cushioning but contribute positively to handling precision and road grip.

The standard residential garage typically measures about 2400 mm (94.5 inches) wide and 5400 mm (212.6 inches) deep. With the RLX facelift's length of 5023 mm (197.7 inches) and width of 1890 mm (74.4 inches), it fits comfortably into a standard two-car garage with sufficient clearance on all sides. Users should still measure their own garage due to variance in door widths and additional storage space requirements but generally, the RLX does not pose parking challenges in standard garages.

The 2018 Acura RLX facelift maintained the same platform and closely similar dimensions as the original 2014-2017 RLX, with length around 5020 mm, width near 1890 mm, and height near 1460 mm. The facelift primarily introduced updated styling, technology upgrades, and feature refinements rather than altering the car's physical size. As such, the exterior and interior space remained consistent, while the 2018 model offered improved infotainment systems and minor suspension tuning to enhance the driving experience.

Compared to rivals like the BMW 5 Series, Audi A6, and Mercedes-Benz E-Class in their respective 2018 model years, the Acura RLX facelift is slightly longer at 5023 mm versus approximately 4935-4965 mm in competitors. Its width at 1890 mm is competitive, offering comparable cabin space. Although the RLX tends to have a slightly lower ground clearance and a moderately larger trunk space than some rivals, it balances luxury features with a reputation for reliability. Performance-wise, it may be less aggressive but offers a comfortable, refined ride typical of flagship Acura sedans.

While exact interior dimensions of the 2018 Acura RLX facelift are not as widely published, the overall exterior size indicates ample headroom, legroom, and shoulder space for both front and rear passengers, typical of a full-size sedan. The low floor height combined with wide cabin dimensions supports a comfortable seating posture. Additionally, the facelift added improved materials, updated infotainment interfaces including a dual-screen setup, and premium sound options enhancing overall passenger comfort and convenience.

The RLX facelift’s larger size and weight (1804-1987 kg or 3978-4380 lbs) mean the vehicle requires a balanced powertrain setup to maintain decent fuel efficiency. Its aerodynamic profile from a low height (1465 mm) helps mitigate drag, but the sedan’s weight and luxury amenities add to energy consumption. Overall, the RLX balances comfortable and smooth driving with moderate fuel economy typical in the full-size luxury category. Its size supports stable high-speed cruising and road presence but may be less nimble than smaller sedans or sportier competitors.