Performance
{mosgoogle}The following data has been compiled from road test results from the 928 Books available. The figures quoted in the charts are an average of all the road tests available.
All cars are 5 speed manual unless otherwise stated.
Figures in italics are estimates.
Perhaps not surprisingly the 928 S4 SE or Sport is the best performance model. This limited model based on the even more limited Club Sport was the closest the 928 range have had to an 'RS' model. The GT was a softened derivative and the GTS close but softer too.
Original Author Andy Elvers
Top Speed (mph)
| Model | 0 - 60 mph | 0 - 100 mph | 50 - 70 mph | 70 - 90 mph | Top Speed (mph) |
| 928 S4 Sport | 5.3 | 12.7 | 2.7 | 3.5 | 173 |
| 928 GTS | 5.4 | 12.8 | 2.7 | 3.4 | 170 |
| 928 GTS (4 spd Auto) | 5.7 | 14.0 | n/a | n/a | 170 |
| 928 GT | 5.6 | 13.3 | 3.1 | 3.6 | 169 |
| 928 S4 | 5.9 | 14.2 | n/a | n/a | 167 |
| 928 S4 (4 spd Auto) | 6.2 | 14.7 | 3.0 | 4.7 | 162 |
| 928 S2 | 6.2 | 15.0 | 3.4 | 5.0 | 158 |
| 928 S | 6.2 | 15.3 | 3.6 | 5.2 | 155 |
| 928 S2 (4 spd Auto) | 6.7 | 16.8 | 3.3 | 5.4 | 154 |
| 928 S (3 spd Auto) | 7.1 | 15.8 | n/a | n/a | 150 |
| 928 | 7.2 | 19.2 | 4.4 | 5.6 | 142 |
| 928 (3 spd Auto) | 7.7 | 19.5 | 3.8 | 5.6 | 139 |
Notes:
The top speed of the S4 Sport is estimated at 173 mph. A Club Sport was tested by a German magazine at this speed.
Devek's 6.0 litre 928 S4 "White Car" has been radar trapped at over 200mph in the USA.
A 928 S4 was recorded at 171mph at Bonneville Salt Flats USA in 1987.
The 928 S2 Auto was over-geared. The car is pulling just 4900rpm at its maximum of 154mph - some 1000rpm off maximum power.
Acceleration 0 - 60 mph (seconds)
| Model | 0 - 60 mph | 0 - 100 mph | 50 - 70 mph | 70 - 90 mph | Top Speed (mph) |
| 928 S4 Sport | 5.3 | 12.7 | 2.7 | 3.5 | 173 |
| 928 GTS | 5.4 | 12.8 | 2.7 | 3.4 | 170 |
| 928 GT | 5.6 | 13.3 | 3.1 | 3.6 | 169 |
| 928 GTS (4 spd Auto) | 5.7 | 14.0 | n/a | n/a | 170 |
| 928 S4 | 5.9 | 14.2 | n/a | n/a | 167 |
| 928 S2 | 6.2 | 15.0 | 3.4 | 5.0 | 158 |
| 928 S4 (4 spd Auto) | 6.2 | 14.7 | 3.0 | 4.7 | 162 |
| 928 S | 6.2 | 15.3 | 3.6 | 5.2 | 155 |
| 928 S2 (4 spd Auto) | 6.7 | 16.8 | 3.3 | 5.4 | 154 |
| 928 S (3 spd Auto) | 7.1 | 15.8 | n/a | n/a | 150 |
| 928 | 7.2 | 19.2 | 4.4 | 5.6 | 142 |
| 928 (3 spd Auto) | 7.7 | 19.5 | 3.8 | 5.6 | 139 |
Notes:
The 928 S and 928 Auto's perform relatively poorly because they have 3 gears.
The 928 S2 Auto performs relatively poorly because of high gearing.
Acceleration 0 - 100 mph (seconds)
| Model | 0 - 60 mph | 0 - 100 mph | 50 - 70 mph | 70 - 90 mph | Top Speed (mph) |
| 928 S4 Sport | 5.3 | 12.7 | 2.7 | 3.5 | 173 |
| 928 GTS | 5.4 | 12.8 | 2.7 | 3.4 | 170 |
| 928 GT | 5.6 | 13.3 | 3.1 | 3.6 | 169 |
| 928 GTS (4 spd Auto) | 5.7 | 14.0 | n/a | n/a | 170 |
| 928 S4 | 5.9 | 14.2 | n/a | n/a | 167 |
| 928 S4 (4 spd Auto) | 6.2 | 14.7 | 3.0 | 4.7 | 162 |
| 928 S2 | 6.2 | 15.0 | 3.4 | 5.0 | 158 |
| 928 S | 6.2 | 15.3 | 3.6 | 5.2 | 155 |
| 928 S (3 spd Auto) | 7.1 | 15.8 | n/a | n/a | 150 |
| 928 S2 (4 spd Auto) | 6.7 | 16.8 | 3.3 | 5.4 | 154 |
| 928 | 7.2 | 19.2 | 4.4 | 5.6 | 142 |
| 928 (3 spd Auto) | 7.7 | 19.5 | 3.8 | 5.6 | 139 |
Notes:
The extra top end power and lighter weight allows the S4 Sport to really begin to pull away. Georg Kacker (of CAR magazine) remarked at the time that only the 959 had more grunt over 125mph than a Club Sport / SE
The 928 S2 Auto really suffers for its high gearing. The 928 S Auto, with 10bhp less and a gear down, is a second faster to 100 mph.
Acceleration 50 - 70 mph - in the lowest gear possible (seconds)
| Model | 0 - 60 mph | 0 - 100 mph | 50 - 70 mph | 70 - 90 mph | Top Speed (mph) |
| 928 GTS | 5.4 | 12.8 | 2.7 | 3.4 | 170 |
| 928 S4 Sport | 5.3 | 12.7 | 2.7 | 3.5 | 173 |
| 928 S4 (4 spd Auto) | 6.2 | 14.7 | 3.0 | 4.7 | 162 |
| 928 GT | 5.6 | 13.3 | 3.1 | 3.6 | 169 |
| 928 S2 (4 spd Auto) | 6.7 | 16.8 | 3.3 | 5.4 | 154 |
| 928 S2 | 6.2 | 15.0 | 3.4 | 5.0 | 158 |
| 928 S | 6.2 | 15.3 | 3.6 | 5.2 | 155 |
| 928 (3 spd Auto) | 7.7 | 19.5 | 3.8 | 5.6 | 139 |
| 928 | 7.2 | 19.2 | 4.4 | 5.6 | 142 |
Notes: For this "on the road" performance comparison gearing is everything. The automatic's do particularly well because they can all pull over 70mph in 2nd gear.
The 928 GTS's and the S4 Sport are neck and neck. Though the Sport is lighter - by maybe 200lbs - this does re-affirm the view that the S4 Sport / CS engine produced more than the claimed 320bhp - much nearer the 350bhp of the GTS.
Acceleration 70 - 90 mph - in the lowest gear possible (seconds)
| Model | 0 - 60 mph | 0 - 100 mph | 50 - 70 mph | 70 - 90 mph | Top Speed (mph) |
| 928 GTS | 5.4 | 12.8 | 2.7 | 3.4 | 170 |
| 928 S4 Sport | 5.3 | 12.7 | 2.7 | 3.5 | 173 |
| 928 GT | 5.6 | 13.3 | 3.1 | 3.6 | 169 |
| 928 S4 (4 spd Auto) | 6.2 | 14.7 | 3.0 | 4.7 | 162 |
| 928 S2 | 6.2 | 15.0 | 3.4 | 5.0 | 158 |
| 928 S | 6.2 | 15.3 | 3.6 | 5.2 | 155 |
| 928 S2 (4 spd Auto) | 6.7 | 16.8 | 3.3 | 5.4 | 154 |
| 928 | 7.2 | 19.2 | 4.4 | 5.6 | 142 |
| 928 (3 spd Auto) | 7.7 | 19.5 | 3.8 | 5.6 | 139 |
Notes: The 928 GT pulls well ahead of the S4 auto, the GTs much lower 3rd gear giving it the big advantage.
