Jaguar’s U.S. volume more than doubled in 2016, rising to a 12-year high thanks to the launch of an all-new entry-level sedan and the brand’s first-ever SUV.

The XE and F-Pace, which now account for nearly three-quarters of Jaguar’s U.S. volume, have taken the brand to a high-volume place (relatively speaking) Jaguar hasn’t visited since the X-Type roamed dealer forecourts.

One year ago, those models didn’t exist, and Jaguar was selling fewer than 50 cars per day in America.

Now Jaguar’s on fire. Year-over-year growth is explosive, with Jaguar’s U.S. volume more than doubling in each of the last ten months and more than tripling in each of 2016’s final three months.

That level of growth can’t be sustained. Jaguar Land Rover North America’s CEO Joachim Eberhardt told Wards Auto, “We have to continue to grow, but we are not looking to grow at the pace we have been.”

All that growth “still does not make us a giant luxury brand,” Eberhardt says. “It makes us a bigger luxury brand that now has scale but is still special and exclusive.”

There’s the key word. Exclusive. “I think that is part of our appeal and something to focus on maintaining,” claims Eberhardt.

What a revolutionary approach for a premium auto brand.

Of course, Jaguar isn’t the only portion of Tata’s Jaguar Land Rover machine. Jaguar, in fact, is the smaller cog. And growth at Land Rover has been significant, as well. Though Land Rover sales are actually down slightly through the first two months of 2017, calendar year 2016 was the brand’s best U.S. sales year ever, with volume across the brand doubling between 2011 and 2016.

Powered by a massive lineup expansion that isn’t yet complete — the Range Rover Velar is up next — Land Rover is entirely present in the heart of the luxury market’s growth sector: SUVs. Land Rover doesn’t sell a single passenger car.

Jaguar, on the other hand, required an SUV to shed its cars-only status. And by launching the F-Pace, Jaguar ended up producing 30 percent of JLR’s U.S. volume in 2016, nearly double its 17 percent share one year earlier. Through early 2017, 35 percent of JLR’s U.S. sales are Jaguar-derived.

But we’ve yet to see whether Jaguar can further its charge into a U.S. luxury market dominated by Mercedes-Benz, Lexus, and BMW, brands which are capable of selling more vehicles in a single month than Jaguar did all of last year. Comparisons that will show whether the full Jaguar lineup — F-Pace, XE, XF, XJ, F-Type — can grow relative to the volume achieved by the full five-pronged Jaguar lineup in the year-ago period won’t occur for another two months.

Based on Eberhardt’s language, however, it appears as though Jaguar’s expectations are not lofty. Although Jaguar sold more than 50,000 vehicles in America as recently as 2003, 40,000-45,000 sales seems like a more realistic target for 2017. And if that’s alright with Jaguar, it ought to be alright with us, too.

Luxury shouldn’t have to equal popularity. The Mercedes-Benz C-Classes and Lexus RXs and BMW 3 Series sedans grazing every level of every parking garage do a fine job of showcasing to the world the upmarket image of Mercedes-Benz, Lexus, and BMW, but they certainly don’t represent exclusivity.

The fact Jaguars aren’t seen everywhere, that exclusivity “sets us apart from the others,” Jaguar’s Eberhardt says.

Meanwhile, setting the Jaguar of today apart from the Jaguar of yesterday is the prevalence of diesel engines. 13 percent of the Jaguars sold in the United States through the first two months of 2017 were diesel-powered: 611 diesel F-Paces, 142 diesel XEs, and 62 diesel XFs.

Want exclusivity, a car you’re certain will not appear in your neighbor’s driveway? A diesel-engined midsize Jaguar sedan should do the trick.

Timothy Cain is the founder of GoodCarBadCar.net, which obsesses over the free and frequent publication of U.S. and Canadian auto sales figures. Follow on Twitter @goodcarbadcar and on Facebook.