Following its debut at the Caramulo Motorfestival in 2025, the ProtUMMble is back in the Serra do Caramulo to make another appearance on the Off-Road Track.

Built by Petertumble Motorsport based on a UMM Alter Troféu and later re-engined by Show_Time Performance, this 100% Portuguese prototype is the result of a decade of work and was designed to tackle some of the most demanding off-road conditions.

The ProtUMMble combines a BMW engine with Nissan transmissions and a national APV suspension system featuring two coilovers per wheel, in a setup specifically tailored to off-road demands.

Its competitive record includes three entries in the 24 Hours ACP TT Fronteira—all successfully finished—and a T8 class victory in 2011. In 2025, its debut at the Caramulo Motorfestival was highlighted by a particularly spectacular moment, with the ProtUMMble taking the final corner with one wheel in the air.

One year after its first appearance at the Caramulo Motorfestival, the ProtUMMble returns to the Off-Road Track to demonstrate to the public the capabilities of a Portuguese build created for competition.