VS
At a Glance
Power
335hp @ 5000
315hp @ 5000
Torque
368lb-ft @ 1600
350lb-ft @ 3000
Fuel
25 mpg est.
24 mpg est.
Engine
3.0 L/183ci
2.3 L/140ci
Choosing between the BMW 8 Series and the Ford Mustang is one of the most common decisions car buyers in the United States face. The BMW 8 Series delivers 335hp @ 5000 while the Ford Mustang produces 315hp @ 5000. On fuel, the 8 Series returns 25 mpg est. while the Mustang uses 24 mpg est. — important in a market where fuel prices change monthly. Pricing starts at $94,500 for the 8 Series and $40,120 for the Mustang. 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
BMW 8 Series840i Convertible 2026 - From $94,500
Ford MustangEcoBoost Convertible 2026 - From $40,120
Performance
Power Output (hp)
335hp @ 5000
315hp @ 5000
Torque (lb-ft)
368lb-ft @ 1600
350lb-ft @ 3000
Engine & Drivetrain
Engine Capacity
3.0 L/183ci
2.3 L/140ci
Engine Layout
Inline
—
Cylinders
6
4
Fuel Type
Gasoline
Gasoline
Forced Induction Device
Turbocharged
Turbocharged
Transmission
Automatic
Automatic
Number of Gears
8
—
Drive Wheels
Rear Wheel Drive
Rear Wheel Drive
Fuel Economy
Fuel Economy (Combined, est.)
25 mpg est.
24 mpg est.
Fuel Economy - City (mpg)
21mpg
20 (2025)mpg
Fuel Economy - Highway (mpg)
29mpg
28 (2025)mpg
Fuel Tank Capacity (gal)
18gal
16gal
Dimensions
Length (in)
191.1in
189.4in
Width (in)
74.9in
75.4in
Height (in)
52.7in
54.8in
Wheelbase (in)
111.1in
107in
Curb Weight (lbs)
4211lbs
3747lbs
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
Features & Tech
Air Conditioning
✓ Standard
✓ Standard
Climate Control
✓ Standard
✓ Standard
Cruise Control
✓ Standard
✓ Standard
Adaptive Cruise Control
✓ Standard
—
Bluetooth
✓ Standard
✓ Standard
Backup Camera
✓ Standard
✓ Standard
Rear Parking Aid
✓ 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 8 Series
2 / 4 categories
Performance
8 Series
Fuel Economy
8 Series
Value
Mustang
Practicality
Tied
Pros & Cons
BMW 8 Series
Better fuel economy (25 mpg est.)
Higher starting price
Ford Mustang
Lower starting price ($40,120)
Higher fuel consumption (24 mpg est.)
Frequently Asked Questions
Which is more fuel efficient, the 8 Series or Mustang?
The 8 Series gets 25 mpg est. and the Mustang gets 24 mpg est. on the combined cycle. The 8 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 8 Series or Mustang?
The 8 Series produces 335hp @ 5000 and 368lb-ft @ 1600 of torque while the Mustang delivers 315hp @ 5000 and 350lb-ft @ 3000 of torque. The 8 Series is the more powerful option.
What is the price difference between the 8 Series and Mustang?
The 8 Series starts from $94,500 and the Mustang from $40,120. The Mustang is cheaper by $54,380 at this variant level. Final on-the-road pricing varies by dealer and specification.
Should I buy the 8 Series or the Mustang?
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