Audi S4 vs INFINITI M45
Side-by-side comparison from manufacturer specifications, NHTSA safety data, and live dealer listings.
Vehicles
Vehicles
2010 INFINITI M45
Overview
| Spec | Audi S4Premium | INFINITI M4545 |
|---|---|---|
| Selected trim | Premium | 45 |
| Body style | Sedan | Sedan |
| Drivetrain | all wheel drive | rear wheel drive |
| Fuel type | premium unleaded (recommended) | premium unleaded (required) |
| Transmission | 8-speed shiftable automatic | 5-speed shiftable automatic |
| Engine type | gas | gas |
| Model year | 2025 | 2010 |
Pricing & market
| Spec | Audi S4Premium | INFINITI M4545 |
|---|---|---|
| MSRP | $54,900 | $52,150 (best) |
| Lowest listing price | $25,423 (best) | — |
| Median listing price | $25,423 (best) | — |
| Highest listing price | $25,423 (best) | — |
| For sale now | 1 (best) | 0 |
Fuel economy & range
| Spec | Audi S4Premium | INFINITI M4545 |
|---|---|---|
| Combined MPG | 24 MPG (best) | 18 MPG |
| City MPG | 20 MPG (best) | 16 MPG |
| Highway MPG | 29 MPG (best) | 21 MPG |
| Fuel tank | 15.3 gal | 20 gal (best) |
Performance
| Spec | Audi S4Premium | INFINITI M4545 |
|---|---|---|
| Horsepower | 349 hp (best) | 325 hp |
| Torque | 369 lb-ft (best) | 336 lb-ft |
| Engine size | 3 L | 4.5 L (best) |
| Cylinders | V6 | V8 |
Size & capability
| Spec | Audi S4Premium | INFINITI M4545 |
|---|---|---|
| Seating | 5 seats | 5 seats |
| Doors | 4 | 4 |
| Cargo volume | 12 cu ft | 14.9 cu ft (best) |
| Payload | 1,036 lbs (best) | — |
| Curb weight | 3,880 lbs (best) | 3,990 lbs |
| Ground clearance | — | 5.1 in (best) |
| Wheelbase | 111 in | 114.2 in (best) |
| Length | 187.5 in | 194.1 in (best) |
| Width | 72.7 in (best) | 71.1 in |
| Height | 56.2 in | 59.4 in (best) |
Safety & recalls
| Spec | Audi S4Premium | INFINITI M4545 |
|---|---|---|
| Rollover | 5 / 5 ★ (best) | — |
| Open recalls (YMM scope) | None reported (best) | 5 |
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 S4 | INFINITI M45 |
|---|---|---|
| 1 | Premium $54,900 MSRP(Currently comparing) | 45 $52,150 MSRP(Currently comparing) |
| 2 | Premium Plus $58,800 MSRP | 45 x $54,650 MSRP |
| 3 | Prestige $61,500 MSRP | — |
Live inventory
Audi S4 vs INFINITI M45 FAQ
- Which is better: 2025 Audi S4 or 2010 INFINITI M45?
- It depends on priorities. OpenDealer compares 2025 Audi S4 vs 2010 INFINITI M45 on MSRP, fuel economy, horsepower, seating, towing, NHTSA safety ratings, and live market prices so you can weigh the tradeoffs.
- Which costs less: 2025 Audi S4 or 2010 INFINITI M45?
- Based on starting MSRP, the 2010 INFINITI M45 starts lower at $52,150. Live Audi S4 listings start at $25,423.
- Which has better startingMsrp: 2025 Audi S4 or 2010 INFINITI M45?
- The 2010 INFINITI M45 leads on startingMsrp in this comparison (52,150).
- Which has better combinedMpg: 2025 Audi S4 or 2010 INFINITI M45?
- The 2025 Audi S4 leads on combinedMpg in this comparison (24).
- Which has better horsepower: 2025 Audi S4 or 2010 INFINITI M45?
- The 2025 Audi S4 leads on horsepower in this comparison (349).