The Caliber was one of the vehicles built to get more customers from the European and Asian markets.
The top-spec version was the SRT4, which replaced the Dodge Neon SRT4. SRT was an abbreviation for Street and Racing Technology. The top sporty model was intended to get more attention and to offer high performance versions for the compact segment.

On the outside, much of the design cues remained the same as on the regular Caliber, but a new scoop in the hood and bigger wheels suggested that there might be some performance under all that flashiness. It was equipped with 19” light-alloy wheels, a diffuser under the rear bumper and a small spoiler on top of the tailgate.

Inside, the bucket seats were embodied with SRT4 logos stitched to the seat backrests. A six-speed Getrag manual gearbox was the only transmission available.

It featured an inline-4 turbocharged engine with a 2.4-liter displacement. The total power output declared was 285 hp and 359 Nm (265 lb-ft) of torque. An independent company tested the vehicle and obtained almost the same figures at the wheel, which means that actually the engine had more power than it was advertised. The braking system was borrowed from the Dodge Charger Police pack with 340 mm (13.4 in) vented discs upfront and 300 mm (11.9 in) in the rear.

The Caliber SRT4 performance was matching those of other hot-hatches, with a 0-100 kph (0-62 mph) acceleration time in 6.7 seconds and a top speed of 243 kph (151 mph).