#Four-doorCoupes

One of the biggest problems with buying a new car is that it’ll start looking dated in a few year’s time. Audi doesn’t have this problem. By keeping a relatively consistent design language for over a decade, you really have to squint to pin down which models are new and which ones aren’t. That effect is lessened when you actually climb inside one, though.

Such is the story with the new A7 Sportback. First glances leave you mumbling to yourself, “That certainly is an Audi.” But it’s the finer details that point to it being something wholly unique and modern.

This leaves us in a gray area, wondering whether Audi’s styling decisions are incredibly lazy or absolute genius. The company doesn’t wow you with flamboyant newness or dramatic bodywork but the fact remains that it continues to deliver exceptionally handsome cars that are inoffensive enough to remain relevant several years on.

Vehicle classifications are important. They enable governments to better regulate. They allow uninformed buyers to get a grip on the market. They foster competition. They clarify conversation.

The passenger car sector is subdivided in countless ways, and not just by size. In the car realm, there are hatchbacks and liftbacks, convertibles and roadsters, station wagons and shooting brakes, sedans and coupes.

Yet when it comes to utility vehicles, besides differentiating (or attempting to differentiate, if there’s even any point) between SUVs and crossovers, much of the classification conversation revolves purely around size, from the subcompact Honda HR-V to the full-size Chevrolet Suburban.

So what’s this? I’m driving a Mercedes-AMG GLC43 4Matic Coupe this week. But we all know it’s not a coupe, which is traditionally known as a car with two doors and a fixed roof. Sometimes the coupe’s definition is even narrower. Yet never has the traditional coupe definition allowed for vehicles such as the GLC, BMW X4, BMW X6, or Mercedes-Benz’s GLE Coupe to be called coupes.

Still, we need to call them something.

Choice is good for car buyers. But in the never-ending quest to produce incremental volume gains, the planet’s largest premium auto brands agree that certain niches are quickly becoming untenable.

Known for questioning in 2014 whether the global sports car market would ever recover from its post-recession collapse, BMW sales boss Ian Robertson told Car And Driver earlier this month that “some body styles will be removed in the future.”

Meanwhile, the head of Mercedes-Benz Dieter Zetsche said at the Geneva auto show that the lack of Chinese uptake for specialty cars “makes the business case for these vehicles less easy.”

Yet long before a model cull returns us to the days of tidy luxury lineups — 3 Series, 5 Series, 7 Series, and 8 Series as the 1990s intended! — premium German marques will first introduce a slew of new models. And the body styles destined for removal? Likely not the silly four-door coupes and impractical SUVs you love to hate.

Mercedes-AMG is, of course, calling its new GT Concept a “four-door coupe.” As perpetually annoying as that marketing trend has become, it’s refreshing to see a concept car that is somewhat representative of the future production model. However, GT Concept not just a glimpse into AMG’s future but also a celebration of 50 years worth of history at Mercedes’ AMG performance arm.

In addition to its AMG badge, the concept has also been adorned with a subtle EQ Power logo that denotes Benz’s fledgling electrified sub-brand and a hybridized powertrain. Mercedes describes the red devil as the evolution of the AMG-specific lineup and says the four-door GT will eventually exist as a genuine roadgoing vehicle — looking familiar, but not quite identical to the current concept.

Due to high demand from customers jumping aboard the CLA bandwagon, Mercedes-Benz has warned dealers in the United States that supply of the new four-door coupe will be limited for the first half of 2014.