Audi S5 vs Porsche 718 Boxster
Side-by-side comparison from manufacturer specifications, NHTSA safety data, and live dealer listings.
Vehicles
Vehicles
2025 Porsche 718 Boxster
Overview
| Spec | Audi S5Premium | Porsche 718 Boxster718 Boxster Convertible |
|---|---|---|
| Selected trim | Premium | 718 Boxster Convertible |
| Body style | Hatchback | Convertible |
| Drivetrain | all wheel drive | rear wheel drive |
| Fuel type | premium unleaded (recommended) | premium unleaded (required) |
| Transmission | 7-speed automated manual | 7-speed automated manual |
| Engine type | gas | gas |
| Model year | 2026 | 2025 |
Pricing & market
| Spec | Audi S5Premium | Porsche 718 Boxster718 Boxster Convertible |
|---|---|---|
| MSRP | $63,300 (best) | $74,900 |
| Lowest listing price | $57,140 | $48,990 (best) |
| Median listing price | $70,464 | $54,779 (best) |
| Highest listing price | $77,803 | $74,999 (best) |
| For sale now | 30 (best) | 3 |
Fuel economy & range
| Spec | Audi S5Premium | Porsche 718 Boxster718 Boxster Convertible |
|---|---|---|
| Combined MPG | 23 MPG | 24 MPG (best) |
| City MPG | 20 MPG | 21 MPG (best) |
| Highway MPG | 29 MPG (best) | 27 MPG |
| Fuel tank | 14.8 gal (best) | 14.3 gal |
Performance
| Spec | Audi S5Premium | Porsche 718 Boxster718 Boxster Convertible |
|---|---|---|
| Horsepower | 362 hp (best) | 300 hp |
| Torque | 406 lb-ft (best) | 280 lb-ft |
| Engine size | 3 L (best) | 2 L |
| Cylinders | V6 | flat 4 |
Size & capability
| Spec | Audi S5Premium | Porsche 718 Boxster718 Boxster Convertible |
|---|---|---|
| Seating | 5 seats (best) | 2 seats |
| Doors | 4 (best) | 2 |
| Cargo volume | 37.5 cu ft (best) | 9.7 cu ft |
| Payload | 992 lbs (best) | 617 lbs |
| Curb weight | 4,288 lbs | 3,097 lbs (best) |
| Wheelbase | 114 in (best) | 97.4 in |
| Length | 190.3 in (best) | 172.4 in |
| Width | 73.2 in (best) | 70.9 in |
| Height | 56.5 in (best) | 50.4 in |
Safety & recalls
| Spec | Audi S5Premium | Porsche 718 Boxster718 Boxster Convertible |
|---|---|---|
| NHTSA overall | Not Rated | — |
| Frontal crash (driver) | Not Rated | — |
| Frontal crash (passenger) | Not Rated | — |
| Side crash (driver) | Not Rated | — |
| Side crash (passenger) | Not Rated | — |
| Side pole | Not Rated | — |
| Rollover | Not Rated | — |
| Open recalls (YMM scope) | None reported | None reported |
Highlighted values indicate the better figure for that spec when a clear winner exists. Specs reflect the selected trim for each vehicle. Drag a vehicle header to reorder columns. MSRP and specifications are manufacturer data; listing prices and inventory come from live dealer listings. Safety ratings are from NHTSA.
Trim overview
All available trims with MSRP. The trim selected above is highlighted; comparison specs use that selection.
| Trim | Audi S5 | Porsche 718 Boxster |
|---|---|---|
| 1 | Premium $63,300 MSRP(Currently comparing) | 718 Boxster Convertible $74,900 MSRP(Currently comparing) |
| 2 | Premium Plus $66,200 MSRP | Style Edition $81,300 MSRP |
| 3 | Prestige $70,900 MSRP | S $86,900 MSRP |
| 4 | — | GTS 4.0 $101,800 MSRP |
Live inventory
Audi S530 for sale
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Used2025 Audi S5
Premium Plus
White•lighting3,021 mi$57,140BMW of Wesley Chapel
Wesley Chapel, FL
New2026 Audi S5
3.0T Premium Plus
Daytona Gray Pearl Effect•Black10 mi$67,376Audi West Chester
West Chester, PA
New2026 Audi S5
3.0T Premium Plus
Glacier White Metallic•Black11 mi$70,736Audi West Chester
West Chester, PA
New2026 Audi S5
3.0T Premium Plus
Glacier White Metallic•Black13 mi$67,376Audi West Chester
West Chester, PA
New2026 Audi S5
3.0T Premium Plus
Mythos Black Metallic•Black13 mi$70,736Audi West Chester
West Chester, PA
New2026 Audi S5
3.0T Premium Plus
Daytona Gray Pearl Effect•Black9 mi$69,200Audi West Chester
West Chester, PA
Porsche 718 Boxster3 for sale
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Used2017 Porsche 718 Boxster
Roadster
Jet Black Metallic•Black/Bordeaux Red32,294 mi$48,990Maserati of Atlanta
Roswell, GA
Used2024 Porsche 718 Boxster
Base
Green24,383 mi$74,999Land Rover Tulsa
Tulsa, OK
Certified2017 Porsche 718 Boxster
Base
Guards Red•Black23,198 mi$54,779Porsche Tallahassee
Tallahassee, FL
Audi S5 vs Porsche 718 Boxster FAQ
- Which is better: 2026 Audi S5 or 2025 Porsche 718 Boxster?
- It depends on priorities. OpenDealer compares 2026 Audi S5 vs 2025 Porsche 718 Boxster on MSRP, fuel economy, horsepower, seating, towing, NHTSA safety ratings, and live market prices so you can weigh the tradeoffs.
- Which costs less: 2026 Audi S5 or 2025 Porsche 718 Boxster?
- Based on starting MSRP, the 2026 Audi S5 starts lower at $63,300. Live Audi S5 listings start at $57,140. Live Porsche 718 Boxster listings start at $48,990.
- Which has better startingMsrp: 2026 Audi S5 or 2025 Porsche 718 Boxster?
- The 2026 Audi S5 leads on startingMsrp in this comparison (63,300).
- Which has better combinedMpg: 2026 Audi S5 or 2025 Porsche 718 Boxster?
- The 2025 Porsche 718 Boxster leads on combinedMpg in this comparison (24).
- Which has better horsepower: 2026 Audi S5 or 2025 Porsche 718 Boxster?
- The 2025 Porsche 718 Boxster leads on horsepower in this comparison (394).
- Which has better seats: 2026 Audi S5 or 2025 Porsche 718 Boxster?
- The 2026 Audi S5 leads on seats in this comparison (5).
- How do the NHTSA safety ratings compare for 2026 Audi S5 vs 2025 Porsche 718 Boxster?
- NHTSA overall crash-test ratings in this comparison: Audi S5 (Not Rated/5 NHTSA overall).