How to actually find obscure car brands with diamond-shaped emblems
Most people know Mitsubishi immediately when you mention a diamond logo. Three red diamonds, joined at a point. That's the easy one. The harder part is tracking down the smaller brands, the regional manufacturers, and the short-lived joint ventures that slapped a diamond badge on their grilles for a few years and then disappeared. I spent a few weekends digging into this after someone asked me at a car meet whether I knew any obscure Japanese marques that used diamond badging. The Mitsubishi connection was obvious, but there were a handful of others that aren't widely documented in English.
Unveiling The Hidden Gems Car Brands With Diamond Logos That Will Leave You Starstruck
That title reads like a clickbait headline, and honestly it is. But the research behind it is real. Here's the method I used, the brands I found, and the problems I ran into along the way. Start with trademark databases. The USPTO, J-PlatPat for Japan, and the EUIPO all have searchable emblems. If you're looking for diamond-shaped car logos, search for geometric descriptors and cross-reference with automotive classifications. It's tedious but it pulls up things you won't find on Wikipedia. Then go to manufacturer histories. Many diamond-logo brands were either regional specialists or joint ventures that got absorbed. Mitsubishi Motors historically licensed the Diamond-Star name to a US assembly plant in Normal, Illinois. The DSM brand produced the Eagle Talon, Plymouth Laser, and Dodge Colt. The logo was essentially a rebranded Mitsubishi, but it operated as its own marketing identity from 1989 to 1994.
The problem with those older joint ventures is that documentation is fragmented. Some sources call them DSM. Some call them Diamond-Star Motors. Some treat them as a Mitsubishi sub-brand. If you're compiling a list, you need to pick a framework and stick to it, because you'll hit contradictory information everywhere.
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The brands I actually found
Mitsubishi Motors — the big one. The three-diamond logo dates back to 1870, originally representing the three family crests of the Yataro Iwasaki clan who founded the company. It wasn't always a car badge. The automotive division adopted it much later, and the design has gone through several refinements. The current version is cleaner and more geometric than the original. Diamond-Star Motors (DSM) — the Chrysler-Mitsubishi joint venture. The brand existed primarily in the North American market. The logo wasn't a standalone diamond emblem so much as a badge that said "DSM" alongside the Mitsubishi triple-diamond. Worth including if you're doing a comprehensive list, but it's not really a separate car brand in the traditional sense. Mitsubishi FTO Greenger Plus and special editions — these weren't separate brands, but Mitsubishi released limited-run models with custom diamond-patterned badges and interior trim. The 1997 FTO Greenger Plus had a unique front emblem that emphasized the diamond motif more aggressively than standard FTO badging. Rare, easily overlooked, and genuinely interesting if you're into Japanese market specifics.
Concept and one-off builds — this is where the list gets thin. Several small European coachbuilders and custom shops have used diamond motifs on their badges, but none reached production scale. If you see a diamond logo on a car from a brand you've never heard of, it's likely a custom paint job, a show car, or a very niche import that never made it through mainstream channels.
What I ran into that wasn't obvious
One thing that caught me off guard: the Mitsubishi Pajero/Montero/Monteero naming history. The diamond logo appears on every model, but the name changes depending on the market. If you're searching for "diamond logo SUV brand" you'll get Mitsubishi regardless of what you call the vehicle. This isn't a separate brand, but it's a genuine point of confusion that makes researching diamond-logo cars harder than it should be. Another issue is that Mercedes-Benz sometimes gets grouped into this category because the three-pointed star can be interpreted as a stylized diamond in certain lighting or engraving styles. It's not. The symbol represents dominance on land, sea, and air. But I've seen multiple listicles conflate the two, and it frustrates me every time I see it. A more legitimate edge case: the Mitsubishi i-MiEV and later electric models. The charging port emblem and some trim-level badges use a modified diamond motif that's distinct from the main corporate logo. It's subtle enough that most people don't notice it, but it's a deliberate design choice that ties the brand identity to the diamond shape across the entire lineup.
The limitations of this kind of research
The honest answer is that there aren't that many production car brands with diamond logos. Mitsubishi dominates the category by a wide margin. Everything else is either a joint-venture spinoff, a special edition badge, or something so obscure that documentation is unreliable. If you're building a definitive list, you'll end up with maybe four or five entries before you start stretching the definition. I also couldn't verify any African, South American, or Eastern European manufacturers using diamond logos in production vehicles. There are concept designs and aftermarket badges that claim this, but nothing that made it to actual factory output. If anyone has specifics on a lesser-known marque from those regions, I'd be interested in seeing the documentation. The biggest practical problem I encountered was inconsistent translation of Japanese brand names. "Mitsubishi" means "three diamonds" in Japanese, but some sources translate it differently or use romanization variants that break search results. If you're compiling your own list, standardize your spelling early. I lost half a day chasing dead links because I used "Mitsubisi" in one query and "Mitsubishi" in another.
Bottom line
The diamond-logo car brand landscape is surprisingly small. Mitsubishi is the centerpiece. DSM is a footnote. Special editions and concept variations fill out the rest. The research is straightforward if you know where to look, but the payoff is modest unless you're already invested in Japanese automotive history. Most people asking this question end up surprised by how narrow the category actually is.
