Drag coefficient of RS7 is much better than that of RS6. That makes difference at top speeds.
Audi RS6 vs Audi RS7 Sportback
| Category | Audi RS6 | Audi RS7 Sportback |
|---|---|---|
| Engine layout | 4.0 l V8 | 4.0 l V8 |
| Max power (ps / bhp) | 560 / 552 | 560 / 552 |
| Max torque (Nm / lb-ft) | 700 / 516 | 700 / 516 |
| Curb weight (kg / lb) | 1895 / 4178 | 1895 / 4178 |
| Power / tonne (ps / bhp) | 295 / 291 | 296 / 291 |
Lap Times
| Track | Audi RS6 | Audi RS7 Sportback |
|---|---|---|
| Sachsenring | 1:39.51 | 1:39.87 |
| Hockenheim Short | 1:13.70 | 1:13.40 |
Acceleration (mph)
| Speed & distance | Audi RS6 | Audi RS7 Sportback |
|---|---|---|
| 0 - 60 mph | 3.6 s | 3.2 s |
| 0 - 100 mph | 7.7 s | 7.8 s |
| Est. 1/8 mile | 8.0 s @ 103.1 mph | 7.9 s @ 103.8 mph |
| 1/4 mile | 11.6 s @ 122.4 mph | 11.6 s @ 123.0 mph |
| Est. 1/2 mile | 19.1 s @ 149.7 mph | 18.9 s @ 151.6 mph |
| Est. 1 mile | 31.6 s @ 173.4 mph | 31.4 s @ 174.0 mph |
Acceleration (kph)
| Speed & distance | Audi RS6 | Audi RS7 Sportback |
|---|---|---|
| 0 - 40 kph | 1.2 s | 1.3 s |
| 0 - 100 kph | 3.5 s | 3.5 s |
| 0 - 130 kph | 5.4 s | 5.4 s |
| 0 - 180 kph | 9.8 s | 9.9 s |
| 0 - 200 kph | 12.1 s | 11.7 s |
| Est. 1000 m | 22.3 s @ 254.0 kph | 22.2 s @ 257.0 kph |
| Est. 100 - 200 kph | 8.6 s | 8.2 s |
General performance
| Category | Audi RS6 | Audi RS7 Sportback |
|---|---|---|
| Top speed | 305 kph (190 mph) | 305 kph (190 mph) |
| Est. max acceleration | 0.89 g (9 m/s²) | 0.88 g (9 m/s²) |
Summary
| Category | Audi RS6 | Audi RS7 Sportback |
|---|---|---|
| Track Performance | 199 | 199 |
| Straight line speed | 1437 | 1468 |
| Total | 1636 | 1667 |
Verdict
There is no clear winner in this comparison.
This comparison has been viewed 4k times.
Acceleration graph
Mental 10y ago
@MS65
Because there is no power to weight ratio for RS6, and that negates RS6's points. That's why the curb weights should always be added.
@FastestLaps
You should update the data for both RS6 and RS7. There were lots of drag tests already (see DeDe's / benzsl's comments on both pages.)
I would take a RS7 over RS6, because I prefer 4-door coupe's exterior more. In anything other they are absolutely identical.
