VS
At a Glance
Power
505hp @ 6500
149hp @ 6400
Torque
443lb-ft @ 2500
146lb-ft @ 4400
Fuel
21 mpg est.
34 mpg est.
Engine
2.9 L/176ci
2.0 L/122ci
Choosing between the Alfa Romeo Giulia and the Nissan Sentra is one of the most common decisions car buyers in the United States face. The Alfa Romeo Giulia delivers 505hp @ 6500 while the Nissan Sentra produces 149hp @ 6400. On fuel, the Giulia returns 21 mpg est. while the Sentra uses 34 mpg est. — important in a market where fuel prices change monthly. Pricing starts at on application for the Giulia and $27,990 for the Sentra. 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)
505hp @ 6500
149hp @ 6400
Torque (lb-ft)
443lb-ft @ 2500
146lb-ft @ 4400
Engine & Drivetrain
Engine Capacity
2.9 L/176ci
2.0 L/122ci
Engine Layout
V
—
Cylinders
6
4
Fuel Type
Gasoline
Gasoline
Forced Induction Device
Turbocharged
—
Transmission
Automatic
Automatic
Number of Gears
8
—
Drive Wheels
Rear Wheel Drive
Front Wheel Drive
Fuel Economy
Fuel Economy (Combined, est.)
21 mpg est.
34 mpg est.
Fuel Economy - City (mpg)
17mpg
30 (2025)mpg
Fuel Economy - Highway (mpg)
25mpg
38 (2025)mpg
Fuel Tank Capacity (gal)
15.3gal
12.4gal
Dimensions
Length (in)
182.5in
183in
Width (in)
73.7in
71.5in
Height (in)
56.1in
57.1in
Wheelbase (in)
111in
106.5in
Curb Weight (lbs)
3806lbs
3177lbs
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
Heated Seats
✓ Standard
✓ Standard
Power Seat Adjustment
✓ Standard
✓ Standard
Keyless Entry
✓ Standard
✓ Standard
Alloy Wheels
✓ Standard
✓ Standard
The Verdict
Which Wins?
Overall Winner
Tie
1 / 4 categories
Performance
Giulia
Fuel Economy
Sentra
Value
Tied
Practicality
Tied
Pros & Cons
Alfa Romeo Giulia
Well-rounded specification
Higher fuel consumption (21 mpg est.)
Nissan Sentra
Better fuel economy (34 mpg est.)
Few notable weaknesses
Frequently Asked Questions
Which is more fuel efficient, the Giulia or Sentra?
The Giulia gets 21 mpg est. and the Sentra gets 34 mpg est. on the combined cycle. The Sentra 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 Giulia or Sentra?
The Giulia produces 505hp @ 6500 and 443lb-ft @ 2500 of torque while the Sentra delivers 149hp @ 6400 and 146lb-ft @ 4400 of torque. The Giulia is the more powerful option.
Should I buy the Giulia or the Sentra?
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