At a Glance
Power
450hp @ 8250
593hp
Torque
317lb-ft @ 4000
586lb-ft
Fuel
20 mpg est.
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Engine
4.2 L/254ci
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Choosing between the Audi A5 and the BMW I4 is one of the most common decisions car buyers in the United States face. The Audi A5 delivers 450hp @ 8250 while the BMW I4 produces 593hp. Pricing starts at $69,600 for the A5 and $70,700 for the I4. Both vehicles have their merits. The right choice depends on your priorities: fuel economy, performance, towing ability, safety features or total cost of ownership. This comparison covers every specification available so you can make an informed decision.
Performance
Power Output (hp)
450hp @ 8250
593hp
Torque (lb-ft)
317lb-ft @ 4000
586lb-ft
Engine & Drivetrain
Engine Capacity
4.2 L/254ci
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Cylinders
8
—
Fuel Type
Gasoline
Electric
Transmission
Auto-Shift Manual w/OD
Automatic
Number of Gears
7
1
Drive Wheels
All Wheel Drive
All Wheel Drive
Fuel Economy
Fuel Economy (Combined, est.)
20 mpg est.
—
Fuel Economy - City (mpg)
16mpg
—
Fuel Economy - Highway (mpg)
23mpg
—
Fuel Tank Capacity (gal)
16.1gal
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Dimensions
Length (in)
183in
188.5in
Width (in)
73.2in
72.9in
Height (in)
53.8in
57in
Wheelbase (in)
108.3in
112.4in
Curb Weight (lbs)
4012lbs
5018lbs
Safety
ABS
✓ Standard
✓ Standard
Brake Assist
✓ Standard
✓ Standard
Stability Control
✓ Standard
✓ Standard
Traction Control
✓ Standard
✓ Standard
Driver Airbag
✓ Standard
✓ Standard
Passenger Airbag
✓ Standard
✓ Standard
Side Airbags Front
✓ Standard
✓ Standard
Curtain Airbags
✓ Standard
✓ Standard
Features & Tech
Air Conditioning
✓ Standard
✓ Standard
Climate Control
✓ Standard
✓ Standard
Cruise Control
✓ Standard
✓ Standard
Adaptive Cruise Control
✓ Standard
✓ Standard
Bluetooth
✓ Standard
✓ Standard
Backup Camera
✓ Standard
✓ Standard
Rear Parking Aid
✓ Standard
✓ Standard
Sunroof
✓ Standard
✓ Standard
Heated Seats
✓ Standard
✓ Standard
Power Seat Adjustment
✓ Standard
✓ Standard
Keyless Entry
—
✓ Standard
Alloy Wheels
✓ Standard
✓ Standard
The Verdict
Which Wins?
Overall Winner
Tie
1 / 4 categories
Performance
I4
Fuel Economy
Tied
Value
A5
Practicality
Tied
Pros & Cons
Audi A5
Lower starting price ($69,600)
Few notable weaknesses
BMW I4
Well-rounded specification
Higher starting price
Frequently Asked Questions
Which has more power, the A5 or I4?
The A5 produces 450hp @ 8250 and 317lb-ft @ 4000 of torque while the I4 delivers 593hp and 586lb-ft of torque. The I4 is the more powerful option.
What is the price difference between the A5 and I4?
The A5 starts from $69,600 and the I4 from $70,700. The A5 is cheaper by $1,100 at this variant level. Final on-the-road pricing varies by dealer and specification.
Should I buy the A5 or the I4?
It depends on your priorities. If fuel economy matters most, check the mpg figures above. If you need towing capacity, compare the towing ratings. For day-to-day driving - commutes, school runs and highway trips - consider ground clearance, service network coverage, and total cost of ownership including insurance and maintenance. Use the spec tables above to compare every detail before making your decision.
Also Consider