VS
At a Glance
Power
450hp @ 8250
255hp @ 4700
Torque
317lb-ft @ 4000
295lb-ft @ 1600
Fuel
20 mpg est.
30 mpg est.
Engine
4.2 L/254ci
2.0 L/122ci
Choosing between the Audi A5 and the BMW 4 Series is one of the most common decisions car buyers in the United States face. The Audi A5 delivers 450hp @ 8250 while the BMW 4 Series produces 255hp @ 4700. On fuel, the A5 returns 20 mpg est. while the 4 Series uses 30 mpg est. — important in a market where fuel prices change monthly. Pricing starts at $70,900 for the A5 and $51,200 for the 4 Series. 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.
Specification
Audi A5RS 5 2dr Cpe 2015 - From $70,900
BMW 4 Series430i xDrive Coupe 2026 - From $51,200
Performance
Power Output (hp)
450hp @ 8250
255hp @ 4700
Torque (lb-ft)
317lb-ft @ 4000
295lb-ft @ 1600
Engine & Drivetrain
Engine Capacity
4.2 L/254ci
2.0 L/122ci
Cylinders
8
4
Fuel Type
Gasoline
—
Forced Induction Device
—
Turbocharged
Transmission
Automatic
Automatic
Number of Gears
7
8
Drive Wheels
All Wheel Drive
All Wheel Drive
Fuel Economy
Fuel Economy (Combined, est.)
20 mpg est.
30 mpg est.
Fuel Economy - City (mpg)
16mpg
27mpg
Fuel Economy - Highway (mpg)
23mpg
34mpg
Fuel Tank Capacity (gal)
16.1gal
15.6gal
Dimensions
Length (in)
183in
187.9in
Width (in)
73.2in
72.9in
Height (in)
53.8in
54.8in
Wheelbase (in)
108.3in
112.2in
Curb Weight (lbs)
4009lbs
3708lbs
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
✓ Standard
Alloy Wheels
✓ Standard
✓ Standard
The Verdict
Which Wins?
Overall Winner
BMW 4 Series
2 / 4 categories
Performance
A5
Fuel Economy
4 Series
Value
4 Series
Practicality
Tied
Pros & Cons
Audi A5
Well-rounded specification
Higher fuel consumption (20 mpg est.)
Higher starting price
BMW 4 Series
Better fuel economy (30 mpg est.)
Lower starting price ($51,200)
Few notable weaknesses
Frequently Asked Questions
Which is more fuel efficient, the A5 or 4 Series?
The A5 gets 20 mpg est. and the 4 Series gets 30 mpg est. on the combined cycle. The 4 Series is the more fuel-efficient choice. In real-world conditions with a mix of highway and urban driving, actual figures will be slightly higher.
Which has more power, the A5 or 4 Series?
The A5 produces 450hp @ 8250 and 317lb-ft @ 4000 of torque while the 4 Series delivers 255hp @ 4700 and 295lb-ft @ 1600 of torque. The A5 is the more powerful option.
What is the price difference between the A5 and 4 Series?
The A5 starts from $70,900 and the 4 Series from $51,200. The 4 Series is cheaper by $19,700 at this variant level. Final on-the-road pricing varies by dealer and specification.
Should I buy the A5 or the 4 Series?
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