How much did a Ford Mustang GT convertible with V8 weigh
Executive summary
A Ford Mustang GT convertible with a V8 does not have a single universal weight; curb weights span roughly from the mid-3,000s to just over 4,000 pounds depending on generation, options and how “curb weight” was measured (empty tank vs. full) [1] [2] [3]. Contemporary S550- and later-generation GT convertibles commonly sit between about 3,800 and 4,012 pounds, while earlier models were lighter and specialty/high-performance variants can be heavier still [4] [3] [5].
1. What “curb weight” means and why numbers vary
Curb weight is typically the manufacturer’s baseline figure for a car ready to drive but without passengers or cargo, and definitions can differ—some sources list curb weight with a full tank and all fluids while enthusiast weigh-ins often show higher or lower real-world values, which explains discrepancies in reporting [5] [6]. Forums and owner-measured weights—such as a 2008 GT weighed with a full tank at ~3,490 lb—illustrate that factory specs and real-world scales can diverge because of options, fuel, dealer-installed items and measurement method [2].
2. Historical examples: older GT convertibles (1999–2008 era)
For New Edge and S197 generation Mustangs, quoted factory curb weights for GT convertibles commonly fall in the mid‑3,000‑pound range—examples include Ford’s published numbers for 1999–2004 GT convertible around 3,375 lb and forum-cited 2005–2008 GT figures roughly 3,450 lb [1] [7]. Enthusiast weighing often produced numbers near those figures but could be higher when tanks were filled, when options were installed, or when aftermarket hardware was added [2] [6].
3. Modern examples: S550 and later GT convertibles (2018–2026 era)
Recent model-year GT convertibles are generally heavier: Car and Driver lists base curb weights around 3,825 lb for some GT convertible specs and dealership/spec pages for 2025/2026 show GT convertible figures about 3,991–4,012 lb depending on transmission [4] [3]. Independent and owner measurements sometimes report still-higher “real-life” weights—2018 GTs have been measured near 3,860–3,920 lb with heavier option packages—so published base weights can understate what owners experience on the scale [8] [9].
4. Performance and Shelby variants skew the top end
High-performance Mustangs and Shelby-badged cars can be heavier: a 2007–2010 Shelby GT500 convertible has been cited as topping about 4,040 lb, and the limited/track-focused GTD was listed in EPA paperwork at roughly 4,343 lb—figures that place some Mustangs near the weight of larger muscle‑car competitors [5] [10] [11]. Publications have questioned unusually high EPA-listed weights as possibly including compliance or testing equipment, which is why skepticism and cross-checks matter [11].
5. Practical takeaway: a usable range and how to pick the right number
For a straightforward answer, a Ford Mustang GT convertible with a V8 most commonly weighs between ~3,375 lb for older generation GT verts and roughly 3,800–4,012 lb for modern GT convertibles in production years around 2018–2026, with exceptional variants reaching ~4,040–4,343 lb [1] [2] [8] [3] [10]. To get the most accurate figure for any specific car, consult the sticker or Ford spec sheet for that model year and trim, and if precision matters for towing, track prep or modifications, have the actual vehicle weighed at a certified scale since factory curb weights and real-world, fully-fueled measurements can differ [5] [6] [2].