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The 2008 Acura ARX-01b is a series of LMP2 prototypes that appear in Forza Motorsport 3 and Forza Motorsport 4.

The ARX-01b competed in various motorsport series, most notably the American Le Mans Series. It competed alongside the Acura ARX-02a, its LMP1 counterpart.


The ARX-01b is featured in three livery variants in each game appearance:

  • 2008 Acura #15 Lowe's Fernandez ARX-01b
  • 2008 Acura #26 Andretti-Green Racing ARX-01b
  • 2008 Acura #66 de Ferran Motorsports ARX-01b


With names like “Andretti,” “Fittipaldi,” and “Kanaan” on the roster, the Andretti-Green Racing ALMS team no doubt has excellent pedigree, which extends to the #26 car, an ARX-01b resulting from the highly successful collaboration between Acura and chassis constructor Courage. Leading the team from their Indianapolis headquarters is IndyCar champion Michael Andretti, son of Mario Andretti. In 2008, #26 had a strong showing, finishing many times in the top ten and taking first in class for the final race of the season at Laguna Seca. It’s hard to miss the sharp livery, predominantly black with yellow and blue accents, in your rearview mirror; but with 16-player races available and a host of ALMS cars in Forza 4, it’s entirely possible (and a lot of fun) to recreate many of the same grids that #26 faced during its real-life career.
— (#26 Andretti-Green Racing ARX-01b) 
While some of Acura’s ARX-01 racers used Lola chassis, the ARX-01b of de Ferran Motorsports used a Courage LC75 chassis and the de rigueur Acura 3.4-liter V8 to challenge all comers in ALMS racing. Chassis #12, wearing the #66 number, was a strong contender that placed within the top ten for much of the 2008 season; not bad, considering it was the first season of ALMS racing for both #66’s distinctive and fetching two-tone blue livery with bold red accents, as well as de Ferran Motorsports itself. The #66, as with all -01b variants, enjoys a host of aerodynamic modifications to the bodywork that improve airflow as well as downforce—racers welcome any advantage, however small, over the fierce competition. Unchanged is the wild performance on tap, enough to challenge and delight Forza players of all stripes.
— (#66 de Ferran Motorsports ARX-01b) 


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Icon ForzaMotorsport3 Wide
Speed 7.2
Handling 8.9
Acceleration 8.9
Launch 7.7
Braking 8.9
R1 946
Unlock Requirements
Car Dealer:
Purchase from the car dealer for 1,000,000 CR
Performance & Body Style
Body Style:
Prototype 2
Top Speed: missing data
0-60 mph (0-97 km/h): missing data
0-100 mph (0-161 km/h): missing data
60-0 mph (97-0 km/h): missing data
100-0 mph (161-0 km/h): missing data
Lateral Gs:
60 mph (97 km/h): missing data
120 mph (193 km/h): missing data
Icon ForzaMotorsport4 Wide
Speed 8.1
Handling 9.8
Acceleration 9.7
Launch 8.5
Braking 9.8
R1 954
Unlock Requirements
Car Dealer:
Purchase from the car dealer for 2,000,000 CR
Performance & Body Style
Body Style:
Prototype 2
Value: 2,000,000 CR
Top Speed: 195.9 mph  (315.2 km/h)
0-60 mph (0-97 km/h): 3.100 secs.
0-100 mph (0-161 km/h): 6.000 secs.
60-0 mph (97-0 km/h): 86.2 ft (26.3 m)
100-0 mph (161-0 km/h): 203.4 ft (62 m)
Lateral Gs:
60 mph (97 km/h): 1.41 g
120 mph (193 km/h): 2.02 g


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