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2018 INFINITI Q70 VS. 2018 ACURA RLX | Competition INFINITI of Smithtown


The 2018 INFINITI Q70 and 2018 Acura RLX are two contenders for the world’s top mid-sized luxury car. The hardware displayed by the Acura is exotic yet anonymous, while the Q70 has left most of the competition in the dust. Below is an in-depth analysis to help you decide which to buy.

Design & Style

The Acura RLX has a plush interior with front seats that are extremely comfortable. The infotainment offered by the INFINITI, however, is state of the art, and both its interior and exterior are defined by curves which are simply elegant, giving it an edge over the Acura, which is a bit plain by comparison.

Technology & Safety

The RLX has better fuel economy, at 20 mpg versus only 18 mpg for the Q70. Both cars seat a maximum of five, and overall they are tied when it comes to the space they provide to those fortunate enough to own them. The INFINITI does have a higher capacity in its fuel tank, at 20 gallons versus just 18.5 for the Acura. In safety crash tests for the frontal barrier, the INFINITI Q70 received four stars while the Acura RLX got five. However, for most other safety metrics each vehicle earned a perfect five stars.


The INFINITI Q70 features rack pinion steering along with a 4 wheel brake system, which is also the case with the RLX. The Acura is heavier, however, at 3,977 pounds versus 3,876 pounds for the Q70. Heavier cars typically have greater engine power than their lighter counterparts, but this is not the case with the Acura RLX, as its V6 Unleaded Premium engine can only produce a maximum of 310 horsepower at 6500 rpm while the INFINITI Q70 can produce 330 horsepower at 7000 rpm. While the difference isn’t huge, every metric count in two vehicles which are already so closely tied.

The Bottom Line

The INFINITI Q70 and Acura RLX are the two best vehicles in their class, so choosing between them is no easy task. However, neither vehicle is without its flaws. The outline of the Acura RLX has been described by some as being too cookie cutter, while others have complained that its cabin is a letdown. The middling powertrains of the INFINITI Q70 will annoy some drivers, as will the cost of its V8 engine. However, it is this engine which gives the Q70 its advantage in performance over the RLX. Additionally, the fact that the INFINITI is lighter means that it will have better handling, acceleration, and maneuverability overall. Therefore, the winner between these two is definitely the INFINITI Q70.

Ready to Schedule an INFINITI Q70 Test Drive Today?

If you are interested in experiencing the luxury package that the 2018 INFINITI Q70 offers, you can test drive this stellar car with us at COMPETITION INFINITI. We are located in St. James, New York, and proudly serve car buyers in the Tri-State area. Drop by our showroom today or simply call us in advance to book an INFINITI Q70 test drive appointment.

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(631) 361-4636

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587 Middle Country Rd • St James, NY 11780

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Competition INFINITI of Smithtown

587 Middle Country Rd St James, NY

Phone: (631) 361-4636


Phone: (631) 361-3376

587 Middle Country Rd St James, NY


Phone: (631) 361-4636

587 Middle Country Rd St James, NY


Phone: (631) 361-3328

587 Middle Country Rd St James, NY
40.8608728 -73.157779
Competition INFINITI of Smithtown 40.8608728, -73.157779.