The curb weight of the 2025 Ford Mustang varies depending on the model configuration. For instance, the Mustang EcoBoost Fastback starts with a base curb weight of 3,588 lbs, while the EcoBoost Convertible is slightly heavier at 3,741 lbs. The Mustang GT Fastback has a base curb weight of 3,827 lbs with the manual transmission and 3,832 lbs with the automatic, whereas the GT Convertible weighs 3,991 lbs with the manual and 4,012 lbs with the automatic transmission. Additionally, the 2025 Mustang Dark Horse comes with a base curb weight of 3,949 lbs and 3,993 lbs for the manual and automatic versions, respectively.

• EcoBoost Fastback: 3,588 lbs
• EcoBoost Convertible: 3,741 lbs
• GT Fastback (manual/auto): 3,827/3,832 lbs
• GT Convertible (manual/auto): 3,991/4,012 lbs
• Dark Horse (manual/auto): 3,949/3,993 lbs

The 2025 Ford Mustang lineup features a wheelbase of 107 inches across all models. The overall length for most models, including the EcoBoost Fastback, EcoBoost Convertible, GT Fastback, and GT Convertible, is 189.4 inches. However, the 2025 Mustang Dark Horse and Dark Horse Premium models are slightly longer, measuring 189.7 inches in length.

• Wheelbase: 107 in
• Fastback length: 189.4 in
• Convertible length: 189.4 in
• Dark Horse length: 189.7 in

The 2025 Ford Mustang lineup, including the Fastback, Convertible, and Dark Horse models, has a total width of 81.9 inches when including the exterior mirrors. Without the sideview mirrors, the Fastback and Convertible models measure 75.4 inches in width, while the Dark Horse measures slightly wider at 75.5 inches. With the mirrors folded, the Mustang's width is 76.1 inches. The front and rear track dimensions vary slightly among models, with the Fastback and Convertible featuring a front track of 62.0 inches and a rear track of 64.7 inches, while the Dark Horse models have a front track of 62.2 inches and a rear track of 63.9 inches.

• Width excluding mirrors (Fastback/Convertible/Dark Horse): 75.4/75.4/75.5 in
• Width including mirrors (Fastback/Convertible/Dark Horse): 81.9/81.9/81.9 in
• Width mirrors folded (Fastback/Convertible/Dark Horse): 76.1/76.1/76.1 in
• Front track (Fastback/Convertible/Dark Horse): 62.0/62.0/62.2 in
• Rear track (Fastback/Convertible/Dark Horse): 64.7/64.7/63.9 in

The interior of the 2025 Ford Mustang accommodates four passengers comfortably. All models, including the Fastback, Convertible, and Dark Horse, provide front headroom of 37.6 inches and legroom of 44.5 inches. In terms of passenger volume, the Fastback and Dark Horse models offer up to 82.8 cubic feet, with rear headroom measuring 34.8 inches and rear legroom at 29.0 inches. Conversely, the Convertible models provide slightly less passenger space at 79.2 cubic feet, but they offer 35.7 inches of rear headroom and 29.2 inches of rear legroom.

• Seating for 4
• Passenger volume (Fastback/Convertible/Dark Horse): 82.8/79.2/82.8 cubic feet
• Front headroom (Fastback/Convertible/Dark Horse): 37.6/37.6/37.6 in
• Front legroom (Fastback/Convertible/Dark Horse): 44.5/44.5/44.5 in
• Rear headroom (Fastback/Convertible/Dark Horse): 34.8/35.7/34.8 in
• Rear legroom (Fastback/Convertible/Dark Horse): 29.0/29.2/29.0 in