A 2014 Ford Mustang Shelby GT500 with 134,800 miles has surfaced on the used market, and whatever the seller is asking, that number carries weight well beyond a single transaction. This is the last year of the supercharged 5.8-liter Trinity V8 Mustang — a car Ford rated at 662 horsepower from the factory — and a high-mileage example hitting the market right now is a live data point on where these cars actually trade, more than a decade after production ended.
The question the listing raises is one the GT500 collector community has been wrestling with as these cars age past the 100,000-mile mark: does heavy use tank value, or does a proven, driven survivor hold its own against the garage queens? The answer, as it turns out, depends heavily on what you think the Trinity V8 era is worth — and the market is starting to form a clear opinion.
Ford’s 5.8-liter supercharged V8 — internally called the Trinity — was a one-generation engine. It appeared in the S197 GT500 from 2013 through 2014, replacing the 5.4-liter unit that had powered earlier Shelby variants, and it never carried forward into the S550 generation. When the 2015 Mustang launched, Ford dropped the GT500 nameplate entirely for several years, and the Trinity went with it.
That end-of-line status is the engine’s most important collector credential. The 662-horsepower rating made the 2013–2014 GT500 the most powerful production Mustang Ford had ever built at the time, and the 5.8-liter displacement gave it a character the later Predator-powered GT500 — introduced for 2020 with a 5.2-liter cross-plane crank V8 — doesn’t replicate. Gearheads who want the specific sound, the specific supercharger whine, and the specific era have exactly one engine family to shop, and the 2014 is the final expression of it.
The conventional wisdom on collector Mustangs has always favored low mileage, and for truly rare examples — Cobra Jet drag cars, SVT-certified survivors, dealer-documented one-owners — that logic still holds. But the 2014 GT500 occupies a different tier. Ford built these in meaningful volume across the 2013–2014 run, which means the market has enough supply to sort examples by condition rather than simply by existence.
A well-maintained, high-mileage GT500 with documented service history tells a different story than a neglected low-mileage example that sat through years of deferred maintenance. The Trinity V8 is a stout engine when cared for, and 134,800 miles on a car that’s been properly serviced — fresh supercharger fluid, consistent oil changes, no deferred cooling system work — is a fundamentally different proposition than the same mileage on a car that’s been ignored. Buyers who understand the platform know what to look for, and they price accordingly. The gap between a clean high-mileage example and a clean low-mileage one is real, but it’s not a cliff.
5.8L Supercharged V8 Gas
6-Speed Manual
Rear-Wheel Drive
The 2013–2014 GT500 has been on a slow, steady appreciation curve since the nameplate went dark after 2014. The reintroduction of the GT500 for 2020 actually helped the S197 cars by reminding the market that the Trinity V8 was a distinct, unrepeatable chapter — not just a precursor. Auction results on platforms like Bring a Trailer have reflected that, with clean, low-mileage 2014 coupes regularly drawing attention from buyers who specifically want the older car’s character over the newer car’s outright output.
High-mileage examples trade at a discount to those pristine survivors, as they should. But the floor on a solid, well-documented 2014 GT500 has been rising alongside the low-mileage ceiling, which suggests the market isn’t writing off driven examples — it’s just pricing them differently. A car with 134,800 miles that runs right, shows honest wear rather than deferred neglect, and carries its service records is still a GT500. The Trinity V8 doesn’t care how many times it’s been around the block.
What this listing ultimately signals is that the 2014 GT500 has crossed into genuine collector territory — not the rarefied air of a numbers-matching muscle car, but the more democratic category of a performance car worth preserving and pricing seriously. Gearheads who’ve been watching these cars should be watching the asking price on this one closely. It’s a real-world referendum on what the last Trinity V8 Mustang is worth when someone actually drove it.
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