| “ | See three of the most formidable car manufacturers face-off in this muscle car showdown! | ” |
— In-game description.
| ||
Maximum Muscle is a bonus series part of the Classic American Muscle career series, located in the Pro group and was added in Aston Martin and Daytona 500 Update (v6.1.0).
Throughout the series, players can earn up to 
65,000 by unlocking tiers, as well as 47,000 and 47 
in bonuses upon reaching 100% completion in the series. Players must earn ?? trophies in Classic American Muscle in order to participate in this series or by 100% completing the Camaro Fifty '17 Chevrolet Camaro SS Championship LTS.
All tiers and 92% completion can be reached without upgrades.
Cars
| Brand | Name | PR | Top Speed | Acc. | Braking | Grip | Cost |
|---|---|---|---|---|---|---|---|
| CHARGER SRT8 | 14.5 | 175 mph 281 kph | 4.80 s | 120.0 ft 36.5 m | 0.88 g | 46,250
|
| MUSTANG GT PREMIUM | 20.4 | 164 mph 263 kph | 4.50 s | 119.0 ft 36.2 m | 0.96 g | 125
|
| CAMARO SS (2017) | 28.6 | 180 mph 289 kph | 4.30 s | 117.0 ft 35.6 m | 1.02 g | 200
|
Events
| Index | Tier | Event | Location | Laps /PR | R$ (+CRB) | Fame |
|---|---|---|---|---|---|---|
| 1.1 | TIER 1 |  Autocross
| Silverstone The Bridge Grand Prix Circuit 2009 | — — | 800 | 200 |
| 1.2 | TIER 1 |  Speed Record
| Suzuka Circuit Grand Prix Circuit | 1 — | 1,800 (+450) | 400 |
| 1.3 | TIER 1 |  Cup
| Circuit des 24 Heures | 1 — | 3,400 (+850) | 700 |
| 2.1 | TIER 2 |  Head To Head
| Dubai Autodrome International Circuit | 1 — | 1,400 (+350) | 300 |
| 2.2 | TIER 2 |  Drag Race
| Nürburgring Grand Prix Circuit | — — | 700 | 200 |
| 2.3 | TIER 2 | Cup
| Mazda Raceway Laguna Seca | 1 16.5 | 1,300 (+325) | 300 |
| 3.1 | TIER 3 |  Speed Snap
| Daytona International Speedway (Evening) Motorcycle Course | — — | 500 | 100 |
| 3.2 | TIER 3 |  Elimination
| Brands Hatch Indy Circuit | Differs — | 1,900 (+475) | 400 |
| 3.3 | TIER 3 | Cup
| Circuit de Catalunya GP Circuit | 1 17.4 | 1,600 (+400) | 300 |
| 4.1 | DODGE CHARGER SRT8 Showcase |  Endurance
| Indianapolis Motor Speedway (Morning) Road Course | Differs — | 1,300/lap (+325/lap) | 300/lap |
| 4.2 | DODGE CHARGER SRT8 Showcase | Cup
| Autodromo Nazionale Monza (Morning) Junior Course | 2 — | 1,500 (+375) | 300 |
| 5.1 | DODGE CHARGER SRT8 Time Trial |  Time Trial
| Formula E Hong Kong Circuit | 1 — | 720 | 140 |
| 6.1 | TIER 6 |  Hunter
| Red Bull Ring Grand Prix Circuit | 1 — | 1,400 (+350) | 300 |
| 6.2 | TIER 6 | Speed Record
| Porsche Test Track On-road Circuit (Short) | 1 — | 900 (+225) | 200 |
| 6.3 | TIER 6 | Cup
| Melbourne | 3 19.8 | 2,900 (+725) | 600 |
| 7.1 | TIER 7 | Autocross
| Circuit de Catalunya GP Circuit | — — | 800 | 200 |
| 7.2 | TIER 7 | Elimination
| Circuit de Spa-Francorchamps | Differs — | 2,000 (+500) | 400 |
| 7.3 | TIER 7 | Cup
| Mount Panorama (Morning) | 1 20.6 | 1,900 (+475) | 400 |
| 8.1 | TIER 8 | Endurance
| Dubai Autodrome Hill Circuit | Differs — | 800/lap (+200/lap) | 200/lap |
| 8.2 | TIER 8 | Speed Snap
| Daytona International Speedway (Evening) Road Course | — — | 600 | 100 |
| 8.3 | TIER 8 | Cup
| Red Bull Ring Morning Grand Prix Circuit | 2 21.5 | 2,900 (+725) | 600 |
| 9.1 | FORD MUSTANG GT PREMIUM Showcase | Speed Record
| Suzuka Circuit West Circuit | 1 — | 1,400 (+350) | 300 |
| 9.2 | FORD MUSTANG GT PREMIUM Showcase | Cup
| Hockenheimring Grand Prix Circuit | 2 — | 3,700 (+925) | 700 |
| 10.1 | FORD MUSTANG GT PREMIUM Time Trial | Time Trial
| Autodromo Nazionale Monza (Morning) Road Course | 1 — | 1,520 | 290 |
| 11.1 | TIER 11 | Head To Head
| Formula E Hong Kong Circuit Morning | 1 — | 1,100 (+275) | 200 |
| 11.2 | TIER 11 | Elimination
| Nürburgring Müllenbachschleife | Differs — | 2,100 (+525) | 400 |
| 11.3 | TIER 11 | Cup
| Circuit de Catalunya National Circuit | 2 21.5 | 2,300 (+575) | 500 |
| 12.1 | TIER 12 | Hunter
| Mount Panorama | 1 — | 2,100 (+525) | 400 |
| 12.2 | TIER 12 | Autocross
| Circuit des 24 Heures (Evening) | — — | 900 | 200 |
| 12.3 | TIER 12 | Cup
| Porsche Test Track On-road Circuit (Long) | 3 27.0 | 4,600 (+1,150) | 900 |
| 13.1 | TIER 13 | Drag Race
| Indianapolis Motor Speedway Road Course | — — | 800 | 200 |
| 13.2 | TIER 13 | Endurance
| Silverstone The National Circuit | Differs — | 900/lap (+225/lap) | 200/lap |
| 13.3 | TIER 13 | Cup
| Circuit de Spa-Francorchamps | 2 30.8 | 4,800 (+1,200) | 900 |
| 14.1 | 2017 CHEVROLET Camaro SS Showcase | Head To Head
| Melbourne | 1 — | 1,400 (+350) | 300 |
| 14.2 | 2017 CHEVROLET Camaro SS Showcase | Cup
| Brands Hatch Indy Circuit | 6 — | 5,700 (+1,425) | 1,100 |
| 15.1 | 2017 CHEVROLET Camaro SS Time Trial | Time Trial
| Daytona International Speedway Motorcycle Course | 1 — | 1,440 | 290 |
| 16.1 | TIER 16 | Elimination
| Mazda Raceway Laguna Seca | Differs — | 2,300 (+575) | 500 |
| 16.2 | TIER 16 | Speed Snap
| Suzuka Circuit East Circuit | — — | 600 | 200 |
| 16.3 | TIER 16 | Cup
| Dubai Autodrome Club Circuit | 3 33.0 | 3,100 (+775) | 600 |
| 17.1 | TIER 17 | Speed Record
| Autodromo Nazionale Monza Road Course | 1 — | 2,000 (+500) | 400 |
| 17.2 | TIER 17 | Hunter
| Nürburgring Sprint Circuit | 1 — | 1,600 (+400) | 300 |
| 17.3 | TIER 17 | Cup
| Hockenheimring National | 4 37.0 | 6,100 (+1,525) | 1,200 |
| 18.1 | TIER 18 | Endurance
| Red Bull Ring Südschleife National Circuit | Differs — | 900/lap (+225/lap) | 200/lap |
| 18.2 | TIER 18 | Autocross
| Mount Panorama (Afternoon) | — — | 1,000 | 200 |
| 18.3 | TIER 18 | Cup
| Circuit de Catalunya Club Circuit | 8 40.4 | 6,100 (+1,525) | 1,200 |
| 19.1 | TIER 19 | Head To Head
| Porsche Test Track Dynamic Circuit | 1 — | 1,100 (+275) | 200 |
| 19.2 | TIER 19 | Elimination
| Silverstone The Grand Prix Circuit | Differs — | 2,300 (+575) | 500 |
| 19.3 | TIER 19 | Cup
| Indianapolis Motor Speedway (Morning) Road Course | 4 43.5 | 6,100 (+1,525) | 1,100 |
| 20.1 | TIER 20 | Speed Snap
| Circuit de Spa-Francorchamps | — — | 600 | 200 |
| 20.2 | TIER 20 | Hunter
| Circuit des 24 Heures | 1 — | 4,400 (+1,100) | 800 |
| 20.3 | TIER 20 | Cup
| Red Bull Ring Südschleife National Circuit | 6 47.0 | 5,500 (+1,375) | 1,000 |
