With its unusual design, it appeared uncertain how luxury buyers would respond to the vehicle.
But after an impressive first few years on the market, the FX has won over a solid following of fans (OK, including this one) who appreciate it for its dynamic driving characteristics and convenient size.
The FX37 used to be the FX35, but for the 2013 model year, it gets a new engine, a 3.7-liter V-6 that makes 325 horsepower, hence the new name.
If you want more power, there's also an FX50 that has a V-8 engine.
The FX37 comes with standard rear-wheel drive and optional all-wheel drive, and has a seven-speed automatic transmission. Fuel economy is rated at 17 mpg city, 24 highway with rear-wheel drive and 16 and 22 with all-wheel.
Infiniti says the FX37 offers 2,000 pounds of towing capacity.
But frankly, if your crossover sport utility vehicle needs center more on utility, rather than sport, this might not be the best choice for you.
But if it's sport you're in to, you've come to the right place.
The engine is powerful, handling is deft and braking is sharp.
Behind the wheel, you'll feel much more like you're driving a sport sedan than a crossover.
On the inside, the FX37 has a comfortable and attractive interior, even though it's not particularly cavernous.
Controls for stereo and climate are positioned effectively on the center console below the navigation screen. The elevated dashboard wraps nicely around to either side, and seating is comfortable, with standard reclining in the front and back.
How's the outside look?
Well, when it debuted, we likened the shape of the FX to a baseball cap.
The current model really hasn't changed all that much.
But over time, sometimes things can grow on you, and it's fair to say that's been the case for us with the FX.
And Infiniti does offer nice standard features on the FX, including 18-inch alloy wheels (20- or 21-inchers are optional), bi-xenon high-intensity headlights and decorative and functional air vents on the sides.
The FX isn't all that big, yet it still offers an optional Around View Monitor camera system to increase visibility, which comes in handy when you are parking in a tight spot.
That add-on is among a healthy list of safety features available on the FX.
The FX starts at around $45,000 and ranges to nearly $55,000.
With its atypical looks and sporty driving dynamics, the FX37 has established a solid footing in the luxury crossover market.