Find a Car

Add a Vehicle to Compare

Change a Vehicle to Compare

Compare 2015 INFINITI Q40 vs 2015 Audi A4

2015 INFINITI Q40 Change
2015 Audi A4 Change
+ Add a Car
Selected Style 4-Door Sedan RWD
Switch Style

Body Style


Style MPG City MPG Hwy Invoice MSRP
4-Door Sedan RWD 19 27 $31,574 $33,950
4-Door Sedan AWD 18 25 $33,061 $35,550
4-Door Sedan CVT FrontTrak 2.0T Prestige
Switch Style

Body Style





Invoice Price
Manufacturer Suggested Retail Price
Monthly Payment Estimate
$566 / month
$592 / month
Dealer Price Quotes
The Car Connection's Take
TCC Rating
/ 10
TCC Rating
How does the
TCC Rating work?
The TCC Rating is a clear numeric rating value based on a 10-point scale that reflects the overall opinion of our automotive experts on any vehicle and rolls up ratings we give each vehicle across sub-categories you care about like performance, safety, styling and more.

Our rating also has simple color-coded “Stop” (red), “Caution” (orange),
or “Go” (green) messages along with the numerical score so you can easily understand where we stand at a glance.

Our automotive experts then also collect and show you what other websites say about these different aspects of any vehicle. We do this leg work for you to simplify your research process.

Learn more about how we rate and review cars here.

Read Our Full Review
/ 10
TCC Rating
Read Our Full Review
TCC’s Bottom Line The 2015 Infiniti Q40 is, literally, last year's model. Alongside the new Q50 it offers a compelling, more vivid driving experience -- albeit with far less refinement. The 2015 Audi A4 and S4 sedans are tech-laden, trim, handsome alternatives to the other expected German cars, as well as one very good American one.
TCC Likes
TCC Dislikes
Fuel Economy
Fuel Economy - City 19 mpg 24 mpg
Fuel Economy - Highway 27 mpg 32 mpg
EPA Classification Mid-Size Cars Compact Cars
Interior Dimensions
Second Shoulder Room (in) 55.2 54.3
Front Leg Room (in) 43.9 41.3
Passenger Volume (ft³) 99 91
Front Hip Room (in) 55.1 -
Second Leg Room (in) 34.7 35.2
Front Head Room (in) 40.5 38
Passenger Capacity 5 5
Second Hip Room (in) 53.7 -
Front Shoulder Room (in) 55.6 55.5
Second Head Room (in) 37.7 37.5
Exterior Dimensions
Height, Overall (in) 57.2 56.2
Track Width, Rear (in) 60.2 61.1
Wheelbase (in) 112.2 110.6
Width, Max w/o mirrors (in) 69.8 71.9
Track Width, Front (in) 59.8 61.6
Min Ground Clearance (in) 5.1 -
Length, Overall (in) 187.9 185.1
Cargo Area Dimensions
Trunk Volume (ft³) 13.5 12.4
Rear Brake Rotor Diam x Thickness (in) 12.1 11.8
Rear Drum Diam x Width (in) NA NA
Disc - Front (Yes or ) Yes Yes
Front Brake Rotor Diam x Thickness (in) 12.6 12.6
Drum - Rear (Yes or ) NA NA
Brake ABS System 4-Wheel 4-Wheel
Disc - Rear (Yes or ) Yes Yes
Fuel Tank
Fuel Tank Capacity, Approx (gal) 20 16.1
Turning Diameter - Curb to Curb (ft) 35.4 37.7
Steering Type Rack-Pinion Rack-Pinion
Rear Tire Order Code NA HM3
Front Tire Size P225/55VR17 P245/40HR18
Spare Tire Size Compact Compact
Front Tire Order Code NA HM3
Spare Tire Order Code NA NA
Rear Tire Size P225/55VR17 P245/40HR18
Weight Information
Base Curb Weight (lbs) 3624 3583
Front Wheel Size (in) 17 X 7.5 18 X 8
Spare Wheel Size (in) Compact Compact
Rear Wheel Material Aluminum Aluminum
Rear Wheel Size (in) 17 X 7.5 18 X 8
Front Wheel Material Aluminum Aluminum
Spare Wheel Material Steel Steel
Maximum Alternator Capacity (amps) 130 150
SAE Net Torque @ RPM 269 @ 5200 258 @ 1500
Engine Order Code NA NA
Displacement 3.7 L/226 2.0 L/121
SAE Net Horsepower @ RPM 328 @ 7000 220 @ 4450
Engine Type Premium Unleaded V-6 Intercooled Turbo Premium Unleaded I-4
Fuel System Sequential MPI Gasoline Direct Injection
EPA Fuel Economy Est - City (MPG) 19 24
Fuel Economy Est-Combined (MPG) 22 27
EPA Fuel Economy Est - Hwy (MPG) 27 32
Seventh Gear Ratio (:1) 0.77 0.50
Sixth Gear Ratio (:1) 0.86 -
First Gear Ratio (:1) 4.92 2.44 - 0.63
Final Drive Axle Ratio (:1) 3.36 4.61
Third Gear Ratio (:1) 2.04 -
Trans Type 7 8
Drivetrain Rear Wheel Drive Front Wheel Drive
Fifth Gear Ratio (:1) 1.00 -
Trans Description Cont. Again NA NA
Reverse Ratio (:1) 3.97 2.92
Second Gear Ratio (:1) 3.19 -
Trans Order Code NA NA
Fourth Gear Ratio (:1) 1.41 -
Trans Description Cont. Automatic w/OD CVT w/OD
Eighth Gear Ratio (:1) - 0.38
Vehicle Name INFINITI Q40 Audi A4
Body Style Sedan FrontTrak Sedan
Suspension Type - Front Double Wishbone Multi-Link
Suspension Type - Front (Cont.) Double Wishbone Multi-Link
Suspension Type - Rear Multi-Link Multi-Link
Suspension Type - Rear (Cont.) Multi-Link Multi-Link
Tons/yr of CO2 Emissions @ 15K mi/year 8.0 (Est) 6.5 (Est)
Crash Test Ratings
Overall Rating -
Overall Frontal Barrier Crash Rating -
Frontal Barrier Crash Rating Driver -
Frontal Barrier Crash Rating Passenger -
Overall Side Crash Rating -
Side Barrier Rating -
Side Barrier Rating Driver -
Side Barrier Rating Passenger Rear Seat -
Side Pole Rating Driver Front Seat -
Combined Side Rating Front Seat -
Combined Side Rating Rear Seat -
Rollover Rating
© 2016 The Car Connection. All Rights Reserved. The Car Connection is published by Internet Brands Automotive Group. Stock photography by izmostock. Read our Cookie Policy.