Audi A6 vs INFINITI Q45
Side-by-side comparison from manufacturer specifications, NHTSA safety data, and live dealer listings.
Vehicles
Vehicles
2006 INFINITI Q45
Overview
| Spec | Audi A6Premium | INFINITI Q4545 Sport |
|---|---|---|
| Selected trim | Premium | 45 Sport |
| Body style | Sedan | Sedan |
| Drivetrain | all wheel drive | rear wheel drive |
| Fuel type | premium unleaded (required) | premium unleaded (required) |
| Transmission | 7-speed automated manual | 5-speed shiftable automatic |
| Engine type | mild hybrid | gas |
| Model year | 2026 | 2006 |
Pricing & market
| Spec | Audi A6Premium | INFINITI Q4545 Sport |
|---|---|---|
| MSRP | $64,100 | $58,100 (best) |
| Lowest listing price | $14,990 (best) | — |
| Median listing price | $23,396 (best) | — |
| Highest listing price | $24,999 (best) | — |
| For sale now | 4 (best) | 0 |
Fuel economy & range
| Spec | Audi A6Premium | INFINITI Q4545 Sport |
|---|---|---|
| Combined MPG | 23 MPG (best) | 18 MPG |
| City MPG | 20 MPG (best) | 15 MPG |
| Highway MPG | 29 MPG (best) | 22 MPG |
| Fuel tank | 19.3 gal | 21.4 gal (best) |
Performance
| Spec | Audi A6Premium | INFINITI Q4545 Sport |
|---|---|---|
| Horsepower | 362 hp (best) | 340 hp |
| Torque | 406 lb-ft (best) | 333 lb-ft |
| Engine size | 3 L | 4.5 L (best) |
| Cylinders | V6 | V8 |
Size & capability
| Spec | Audi A6Premium | INFINITI Q4545 Sport |
|---|---|---|
| Seating | 5 seats | 5 seats |
| Doors | 4 | 4 |
| Cargo volume | 13.5 cu ft | 13.6 cu ft (best) |
| Curb weight | 4,310 lbs | 4,153 lbs (best) |
| Ground clearance | — | 5.8 in (best) |
| Wheelbase | 115.1 in (best) | 113 in |
| Length | 196.8 in | 200.8 in (best) |
| Width | 73.8 in (best) | 72.6 in |
| Height | 57.4 in | 58.7 in (best) |
Safety & recalls
| Spec | Audi A6Premium | INFINITI Q4545 Sport |
|---|---|---|
| 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 (best) | 1 |
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 A6 | INFINITI Q45 |
|---|---|---|
| 1 | Premium $64,100 MSRP(Currently comparing) | 45 Sport $58,100 MSRP(Currently comparing) |
| 2 | Premium Plus $67,500 MSRP | — |
| 3 | Prestige $71,400 MSRP | — |
Live inventory
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Used2019 Audi A6
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Used2019 Audi A6
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Audi A6 vs INFINITI Q45 FAQ
- Which is better: 2026 Audi A6 or 2006 INFINITI Q45?
- It depends on priorities. OpenDealer compares 2026 Audi A6 vs 2006 INFINITI Q45 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 A6 or 2006 INFINITI Q45?
- Based on starting MSRP, the 2006 INFINITI Q45 starts lower at $58,100. Live Audi A6 listings start at $14,990.
- Which has better startingMsrp: 2026 Audi A6 or 2006 INFINITI Q45?
- The 2006 INFINITI Q45 leads on startingMsrp in this comparison (58,100).
- Which has better combinedMpg: 2026 Audi A6 or 2006 INFINITI Q45?
- The 2026 Audi A6 leads on combinedMpg in this comparison (23).
- Which has better horsepower: 2026 Audi A6 or 2006 INFINITI Q45?
- The 2026 Audi A6 leads on horsepower in this comparison (362).
- How do the NHTSA safety ratings compare for 2026 Audi A6 vs 2006 INFINITI Q45?
- NHTSA overall crash-test ratings in this comparison: Audi A6 (Not Rated/5 NHTSA overall).