How fast is a Kia Stinger without limiters?

[DiVictoria]

A Kia Stinger GT with its electronic speed limiter removed can reach an estimated top speed of 170 to 175 mph (274 to 282 km/h), a slight increase from its factory-limited 167 mph. This potential is constrained by its power, aerodynamics, and weight, not just the removed governor.

The factory 3.3-liter twin-turbo V6 in the GT/GT2 trims produces 365 horsepower and is electronically governed to 167 mph (269 km/h) for safety and tire ratings, as consistently reported by automotive media in instrumented testing.

Removing this limiter via an aftermarket engine control unit (ECU) tune allows the engine to rev to its full potential in the highest gear. However, top speed gains are modest. Based on data from tuner logs and performance tracking platforms like Dragy, the unrestricted Stinger is capable of reaching approximately 170-175 mph. This aligns with the car's aerodynamic profile and power-to-weight ratio. The Stinger is not a low-drag hypercar; its sportback design creates significant aerodynamic drag at very high speeds, which becomes the primary limiting factor once the governor is gone.

The vehicle's weight, around 4,000 lbs, and the gear ratios of its 8-speed automatic transmission also play a role. The transmission is geared to hit its redline near the theoretical top speed, meaning additional power alone won't push it significantly faster without altering the final drive ratio.

State	Top Speed	Key Limiting Factor
Stock (Factory)	167 mph (269 km/h)	Electronic Speed Governor
Without Limiter (Tuned)	170-175 mph (274-282 km/h)	Aerodynamic Drag & Horsepower

It is critical to understand that achieving these speeds requires a long, clear, and perfectly straight road. Public roads are never appropriate for such attempts due to immense safety and legal risks. Any high-speed testing should be conducted exclusively on closed professional tracks or sanctioned venues, such as certain sections of the German Autobahn under ideal conditions, as seen in various professional media tests.

Ultimately, while removing the limiter unlocks the car's full mechanical capability, the Kia Stinger is engineered as a grand tourer, not an ultra-high-speed top-end machine. The modest gain from 167 mph to an estimated 175 mph reflects its balanced design priorities of comfort, style, and accessible performance.

[JosieDella]

I own a tuned ‘22 Stinger GT2. After getting an ECU tune primarily for more torque, the shop also removed the speed limiter. I verified the change on a private, closed airstrip with a Dragy GPS unit. The car pulled strongly past the old 167-mph cutoff and settled at an indicated 172 mph before I had to brake. The feeling was stable, but you could absolutely feel the air pushing hard against the car. The extra 5 mph is real, but it takes a lot of room and feels like the car’s absolute ceiling.

[LaZoey]

As someone who’s driven one on a track, the Stinger’s top speed story is about balance. From the factory, it hits a wall at 167 mph—that’s the computer saying “enough.” Take that computer restriction away, and physics takes over. The twin-turbo V6 has enough power to push it a bit further, maybe another 5-8 mph. But you’re fighting a steep hill of air resistance. The car remains planted, but the acceleration tapers off dramatically. So, how fast? Realistically, low 170s mph. It’s a testament to its solid engineering, but it’s not built to chase 200-mph supercars. The limiter removal is more about removing an artificial barrier than discovering a hidden speed demon.

[GabrielaFitz]

If you’re asking about the unlimited top speed, you’re likely comparing performance specs. Here’s the straightforward breakdown. The hardware limits the Stinger GT more than the software. With 365 hp moving considerable weight, its theoretical top speed calculated by industry engineers aligns with the 170-175 mph range seen in post-tune data. The factory 167-mph limit is a conservative buffer. Key factors capping the gain: drag force increases with the square of speed, so going from 167 to 175 mph requires a disproportional increase in power, which the stock turbos can’t deliver. The transmission gearing also runs out of ratio. For a performance sedan in its class, this is strong, but not exceptional.

[VonColin]

I followed this topic for months before my purchase. Online forums are full of owners discussing tunes and limiter removal. The consensus from those who’ve actually done it mirrors the professional data: the car gains a few miles per hour. Most reports cluster around 172-174 mph. It seems the variation depends on conditions and whether the car has additional mods like improved intercoolers. The universal note from everyone is that hitting that speed requires a massive amount of safe space—it’s not a quick burst. The car runs out of breath. My takeaway? The limiter removal is a cool side effect of tuning for more mid-range power, but chasing the last few mph isn’t the Stinger’s best trick. Its thrill is in the acceleration to that point, not the peak number itself.