Acura RLX Vs. Infiniti Q50

By Justin Cupler | March 23rd, 2019

Luxury sedans may have lost a step to crossovers, but they are still among the most popular models on showroom floors. Here at Acura of Rochester serving the Pittsford and Fairport areas, our range-topping RLX sedan has loads to offer, including a Sport Hybrid model with NSX DNA under the skin. How does this large sedan stand up against the smaller, nimbler, and cheaper 2019 Infiniti Q50? Find out below.


With both models debuting back in 2014, the 2019 Acura RLX and the 2019 Infiniti Q50 are still up to date and stylish. The 2019 Acura RLX features a more executive look with its harder angles and more squared-off body panels. It still looks like a sports sedan, but one you can bring home to meet the parents.

The Infiniti Q50, however, has a more aggressive and sporty design with its freer-flowing lines and shaped-by-the-wind design. Moving into the Sport and Red Sport 400 models ups the sportiness with larger wheels, a sport-trimmed cabin, and more. This design shows Infiniti is targeting a younger crowd.

In terms of size, the 2019 RLX has a significantly larger body that it 8.5-inches longer, 2.6 inches wider, and 0.5 inches taller than the Q50.


Measurement 2019 Acura RLX 2019 Infiniti Q50 Difference
Length 198.1 inches 189.6 inches +8.5 inches
Width 74.4 inches 71.8 inches +2.6 inches
Height 57.7 inches 57.2 inches +0.5 inches
Wheelbase 112.2 inches 112.2 inches
Ground Clearance 4.5 inches 5 inches -0.5 inches
Curb weight 3,977 to 4,380 pounds 3,671 to 3,993 pounds +306 to +387 pounds


Advantage: 2019 Acura RLX

  • Larger, more executive-looking body

Advantage: 2019 Infiniti Q50

  • Smaller and easier to handle
  • Sportier look


Inside, the 2019 Acura RLX continues its more executive ways with a classic luxury interior that boasts clean lines, loads of premium materials, and upscale features. The latter includes standard 12-way power seats, tri-zone climate control, a 14-speaker audio system, SiriusXM, Milano premium leather upholstery, and more. Plus, there are tons of standard safety features, including automatic emergency braking, lane-keep assist, forward collision alert, adaptive cruise, and more.

The 2019 Infiniti Q50 boasts a far sportier look with its swoopy dash and large center console that create two separate cocoons for the driver and passenger. The Infiniti Q50 also has a fair share of standard features, but at price that’s over $18,000 cheaper than the RLX, its equipment list is understandably shorter. This list includes a dual-screen infotainment system, a six-speaker audio system, an eight-way power driver’s seat, and more.

In terms of roominess, the RLX has significantly more room in virtually every measurable except headroom and front legroom. The game changer is its extra 3.7 inches of rear legroom and the extra 1.7 cubic feet of space in the trunk.


Measurement 2019 Acura RLX 2019 Infiniti Q60 Difference
Front headroom 37.6 inches 40.2 inches -2.6 inches
Front legroom 42.3 inches 44.5 inches -2.2 inches
Front shoulder room 59.6 inches 56.7 inches +2.9 inches
Front hip room 55.9 inches 53.2 inches +2.7 inches
Rear headroom 36.9 inches 37.5 inches -0.6 inches
Rear legroom 38.8 inches 35.1 inches +3.7 inches
Rear shoulder room 57 inches 56.1 inches +0.9 inches
Rear hip room 54.5 inches 52.5 inches +2 inches
Trunk volume 14.9 cubic feet 13.2 cubic feet +1.7 cubic feet


Advantage: 2019 Acura RLX

  • Significantly roomier cabin
  • Tons more tech and comfort features
  • Standard active safety features

Advantage: 2019 Infiniti Q50

  • More headroom
  • Sporty, cocoon-like front seats


As luxury sedans, there is a level of performance buyers expect from the 2019 Acura RLX and 2019 Infiniti Q50. Both sedans deliver across the board, though they get there in vastly different manners.


The 2019 Acura RLX relies on raw oomph from its standard 310-horsepower 3.5-liter V-6 engine that  hustles it to 60 mph in under six seconds. The RLX sport Hybrid tosses three electric motors into the mix, pushing the total output to 377 horsepower and shipping the RLX to 60 mph in just 4.9 seconds. An added benefit of the Sport Hybrid model is its huge boost in city fuel economy, making it a great option for commuters who deal with a lot of stop-and-go traffic.

The 2019 Infiniti Q50 relies on turbocharging to get its power. The base Q50 2.0t uses a 2.0-liter turbocharged four-pot to generate 208 horsepower and sprint this sedan to 60 mph in 6.6 seconds. Up one notch is the 3.0t model with its 3.0-liter twin-turbo V-6 that injects 300 horsepower and launches the Q50 to 60 mph in just five seconds. Topping the range is the Red Sport 400 and its 400-horsepower version of the twin-turbo V-6 that sprints this sedan to 60 mph in just 4.5 seconds.

Setting the Q50 apart is its available all-wheel drive across the lineup. Acura buyers can only the RLX Sport Hybrid has all-wheel drive, and it is compulsory in this model.


2019 Acura RLX 2019 Infiniti Q60 Difference
Engine 3.5-liter V-6 2.0-liter turbo 4-cyl
Horsepower 310 hp at 6,500 rpm 208 hp at 5,500 rpm +102 hp
Torque 272 lb-ft at 4,500 rpm 258 lb-ft at 1,500 to 3,500 rpm +14 lb-ft
Transmission 10-speed automatic 7-speed automatic
Driveline FWD RWD (std.)/ AWD (opt.)
0-60 time 5.8 6.6 seconds -0.8 seconds
MPG City 20** 22 to 23 mpg -2 to -3 mpg
MPG Highway 29** 28 to 30 mpg +1 to -1 mpg
MPG Combined 23** 24 to 25 mpg 1 to -2 mpg
Optional Engine 3.5-liter V-6 Hybrid 3.0-liter twin-turbo V-6
Horsepower 377 hp at 6,500 rpm 300 hp at 6,400 rpm +77 hp
Torque 341 lb-ft at 4,700 rpm 295 lb-ft at 1,500 to 5,200 rpm +46 lb-ft
Transmission 7-speed dual-clutch 7-speed automatic
Driveline AWD RWD (std.)/ AWD (opt.)
0-60 time 4.9 seconds 5 seconds -0.1 seconds
MPG City 28 mpg** 19 to 20 mpg +9 to +8 mpg
MPG Highway 29 mpg** 27 to 28 mpg +2 to +1 mpg
MPG Combined 28 mpg** 22 to 23 mpg +6 to +5 mpg
Optional Engine
3.0-liter twin-turbo V-6
400 hp at 6,400 rpm -33 hp
350 lb-ft at 1,600 to 5,200 rpm -8 lb-ft
7-speed automatic
Driveline RWD (std.)/ AWD (opt.)
0-60 time
4.5 seconds +0.5 seconds
MPG City
19 to 20 mpg +9 to +8 mpg
MPG Highway
26 mpg +2 mpg
MPG Combined
22 mpg +6 mpg


Advantage: 2019 Acura RLX

  • Big base power advantage
  • Quicker in most trims
  • Thriftier and higher-performing hybrid

Advantage: 2019 Infiniti Q50

  • Lighter and nimbler
  • Wilde 450-horsepower Red Sport model
  • Available all-wheel drive across the board

Pricing and Features

The 2019 Acura RLX has a basic lineup structure that includes a base model and a Sport Hybrid with respective starting prices of $54,900 and $61,900.


The Infiniti Q50 lineup includes four trim levels: 2.0t Pure, 3.0t Luxe, 3.0t Sport, and Red Sport 400. These trims’ starting prices range from $35,550 to $51,250.

2019 Acura RLX Key Features and Pricing by Trim

Base: $54,900*

  • 3.5-liter V-6 engine
  • Agile Handling Assist
  • Electronic power steering
  • Four-wheel anti-lock disc brakes
  • 19-inch machine-finished 15-spoke wheels
  • Jewel Eye LED headlights
  • LED taillights
  • LED daytime running lights
  • Mirror-integrated turn signals
  • Power moonroof
  • Heated mirrors with reverse-gear tilt down
  • Acoustic windshield and front side glass
  • Sport seats with perforated Milano premium leather
  • Contrast stitching and piping
  • 12-way power front seats
  • Heated front seats
  • Tri-zone automatic climate control
  • GPS-linked climate control
  • Leather-wrapped steering wheel
  • Electric tilt-and-telescoping steering wheel
  • Leather-wrapped shift knob
  • Keyless access and ignition
  • Power windows with one-touch-up/down
  • Steering-wheel-mounted controls
  • Voice recognition
  • Active sound control
  • Ambient interior lighting
  • Auto-dimming rearview mirror
  • 14-speaker ELS Studio Premium Audio System
  • Pandora
  • HD radio
  • SiriusXM
  • USB interface with iPod integration
  • Bluetooth connectivity with streaming audio
  • Song By Voice
  • Speed-sensitive volume
  • Navigation
  • AcuraLink Real-Time Traffic
  • Traffic Rerouting
  • AcuraLink connected services
  • Hill-start assist
  • Electric parking brake
  • Rain-sensing wipers
  • Auto-on/off headlights
  • HomeLink
  • Adaptive cruise control
  • Lane-keep assist
  • Lane-departure warning
  • Traffic-jam assist
  • Road-departure mitigation
  • Automatic emergency braking
  • Blind-spot monitoring
  • Multi-view rearview camera with dynamic guidelines


RLX Sport Hybrid: $61,900*

  • All Base features, plus
  • Three-motor hybrid system
  • Seven-speed dual-clutch transmission
  • All-wheel drive
  • Idle stop
  • Auto-dimming, power folding side mirrors
  • Power rear sunshade
  • Manual rear door sunshade
  • Push- button transmission
  • Head-up display
  • LED fog lights
  • Exclusive 19-inch wheels
  • Krell 14-speaker audio system
  • Remote engine ignition
  • Heated and ventilated seats
  • Heated outboard rear seats
  • 360-degree camera
  • Front and rear parking sensors

2019 Infiniti Q50 Key Features and Pricing by Trim

2.0t Pure: $36,550

  • 2.0-liter four-cylinder turbocharged engine
  • Seven-speed automatic transmission
  • Hydraulic speed-sensitive power steering
  • Drive mode selector
  • Hill-start assist
  • Rear-wheel drive
  • Four-wheel anti-lock disc brakes
  • 17-inch split-five-spoke wheels
  • Auto-on/off LED headlights
  • Daytime running lights
  • LED fog lights
  • LED taillights
  • Remote keyless entry
  • Power, heated mirrors with integrated LED turn signals
  • Variable intermittent, speed sensitive windshield wipers
  • Door handle courtesy lights
  • Dual chrome exhaust finishers
  • Infiniti Intelligent Key with push-button start
  • Dual-zone automatic climate control
  • Rear air vents
  • Power windows with one-touch-up/down
  • Power door locks
  • Sequential welcome lighting
  • Front and rear floor mats
  • Leatherette seating
  • Lunar Black trim
  • Eight-way power driver’s seat
  • Leather-wrapped steering wheel
  • Leather-wrapped shift knob
  • Six-speaker AM/FM/CD/MP3 audio system
  • SiriusXM
  • Steering-wheel-mounted controls
  • Dual infotainment displays (8-inch upper and 7-inch lower)
  • Voice recognition
  • Bluetooth connectivity with streaming audio
  • Rearview camera
  • Tilt-and-telescoping steering wheel
  • Cruise control
  • Forward-collision warning
  • Automatic emergency braking


3.0t Luxe: $38,300

  • All 2.0t Pure features, plus
  • 3.0-liter twin-turbo V-6 engine
  • Electric speed-sensitive power steering
  • 18-inch wheels
  • Power moonroof
  • Bright aluminum trim
  • Auto-dimming rearview mirror
  • HomeLink universal garage door opener


3.0t Sport: $47,950

  • All 3.0t Luxe features, plus
  • Dynamic Digital suspension
  • Four-piston front calipers
  • Two-piston rear calipers
  • Larger brake rotors
  • 19-inch wheels
  • Advanced climate control with auto-recirculation
  • Plasmacluster air purifier
  • Ambient lighting
  • Leather upholstery
  • Kacchu aluminum trim
  • 60/40 split-folding rear seat
  • Power driver’s lumbar
  • Eight-way power passenger’s seat
  • Power tilt-and-telescoping steering wheel
  • Two position memory for seat, steering wheel, and mirrors
  • Eight-way power sport seats
  • Heated front seats
  • Heated steering wheel
  • 16-speaker Bose audio system
  • Navigation
  • SiriusXM Traffic
  • 360-degree camera
  • Front and rear parking sensors
  • Steering-wheel-mounted paddle shifters
  • Remote ignition
  • Rear automatic emergency braking
  • Blind-spot warning
  • Rear cross-traffic alert


Red Sport 400

  • All 3.0t Luxe features, plus
  • High-output 3.0-liter twin-turbo 3.0-liter V-6 engine
  • Staggered 19-inch wheels
  • Black-colored mirrors
  • Unique exhaust tips
  • Semi-aniline quilted leather seats
  • Aluminum pedals
  • Red Sport paddle shifters
  • Dynamic Digital suspension
  • Four-piston front calipers and two-piston rear calipers
  • Larger brake rotors
  • Kacchu aluminum trim
  • 60/40 split-folding rear seat
  • Power driver’s lumbar
  • Eight-way power sport seats
  • Heated front seats
  • Heated steering wheel
  • Aluminum pedals
  • Navigation
  • SiriusXM Traffic
  • 360-degree camera
  • Front and rear parking sensors
  • Remote ignition
  • Rear automatic emergency braking
  • Blind-spot warning
  • Rear cross-traffic alert

Who Should Buy the 2019 Acura RLX?

The Acura RLX is an executive’s car, as  its roomy rear seat and miles of comfort make it great for hauling around business associates. It is also great for larger families with older kids who need the extra rear-seat room.

Who Should Buy the 2019 Infiniti Q50?

With its lower base price, the Infiniti Q50 is great for a first-time luxury sedan shopper. The 2019 Infiniti Q50 also works for a younger buyer who wants a little extra performance from the Red Sport 400 model.


Head down to Acura of Rochester today to test drive the 2019 Acura RLX and see how it performs for yourself. Whether you have a daily commute to Pittsford or just cruise to Fairport on the weekends, the RLX and the RLX Sport Hybrid can get you there quickly, efficiently, and in style. Can’t make it to out Rochester area dealership for a test drive today? That’s OK. Swing by our online inventory page to see what RLX models we have in stock and set up a test drive later.


* Prices shown are Acura suggested retail prices only and do not include taxes, license or a $995 destination and handling charge. Acura vehicle accessory costs, labor and installation vary. Dealers set their own prices. Please consult your selected dealer.


** Based on 2019 EPA mileage ratings. Use for comparison purposes only. Your actual mileage will vary, depending on how you drive and maintain your vehicle, driving conditions, battery pack age/condition (hybrid only) and other factors.