As fun and undeniably cool as an open-top version sounds, engineering realities dictate that a drop-top e.MAS 5 is completely impossible.
The recently launched Proton e.MAS 5 has successfully democratized electric vehicle ownership in Malaysia, arriving as a highly practical, affordable five-door EV hatchback. Yet, looking at its sleek proportions, it is hard for car enthusiasts not to daydream. Imagine a Proton e.MAS 5 Cabrio—a dapper, open-top cruiser catching the breeze down the coastal roads of Penang or the streets of Kuala Lumpur.
The Weight of the Battery vs. Structural Integrity
The primary roadblock to a cabriolet variant comes down to fundamental EV architecture and safety physics. Like all battery-electric vehicles, the e.MAS 5 carries a substantial amount of its curb weight in its floor-mounted battery pack.
In a conventional hardtop vehicle, the roof structure acts as a vital geometric cage that distributes forces during an accident. If you chop the roof off to create a cabriolet, you lose that structural rigidity. In the event of a rollover accident, the immense, dead weight of that floor-mounted battery pack would shift upward and instantly crush the standalone A-pillars. To reinforce the chassis enough to support that heavy battery weight during a rollover, engineers would have to add extensive, heavy steel bracing—defeating the purpose of an agile, compact EV.
The Economics of an Affordable EV Platform
Beyond the safety constraints, the business case simply isn’t there. The greatest advantage of the Proton e.MAS 5 is that it is remarkably inexpensive to mass-produce, making it attainable for the public. Developing a low-volume, niche convertible variant requires massive research and development outlays that would completely destroy the vehicle’s budget-friendly positioning.
Furthermore, PRO-NET relies heavily on its global partnership with Geely for platform sharing. Because Geely has not commissioned a cabriolet version of this architecture for the global market, it effectively removes any possibility of a localized PRO-NET version ever making it to production.
While we can collectively lament the absence of a breezy, top-down Malaysian EV cruiser, the standard e.MAS 5 hatchback remains a landmark achievement—even if it keeps its roof firmly attached.
By the way, we’re still unsure who rendered these images, if you have a link to the original poster, do let us know so we can leave a link to their work and credit them.
