The Toyota Yaris might look familiar, but the GR Yaris changed everything. Built as a homologation special for world rally competition, the GR Yaris is one of the most serious performance cars Toyota has produced in decades. From the factory it is already very good. With precise calibration, it becomes something else entirely. At AutoUpgrades, we apply OEM-level German calibration discipline to transform the GR Yaris from impressive to genuinely outrageous, without losing the control, balance, and durability Toyota engineered into it.

Toyota Yaris & GR Yaris Performance Tuning Auckland

Performance Gains:

GR Yaris (2020–): +50HP, +70Nm
2019– 1.5: +10HP, +12Nm
2012–2018 1.5: +8HP, +10Nm
2012–2018 1.3: +9HP, +11Nm

Why Upgrade?

GR Yaris Performance: The factory GR Yaris is quick. Proper calibration turns it into a completely different animal. Stronger torque delivery, harder acceleration, and relentless mid-range punch elevate it from hot hatch to something far more serious.
Response: Sharper throttle mapping and refined torque control make the car feel instantly alert, especially under load and when driving hard.
Control: Power is delivered cleanly and predictably, preserving traction, balance, and confidence exactly as a rally-bred car should.

How It Works:

Morning: Drop your Yaris or GR Yaris off and discuss how you drive it, road, track, or fast road use.
Tuning: We recalibrate the ECU using OEM-level methodology, refining torque models, boost control, ignition, and fuelling with factory-grade logic and safety strategies intact.
Afternoon: Collect your car and experience a GR Yaris that feels sharper, faster, and frankly a bit unhinged, in the best possible way.

GR Yaris Tuning Expertise

The GR Yaris responds exceptionally well to proper calibration. Toyota left real headroom in the factory setup, and when unlocked correctly the result is explosive performance without sacrificing reliability. Our approach is disciplined and engineering-led, not aggressive for the sake of numbers. The outcome is a GR Yaris that pulls harder, accelerates faster, and feels brutally effective, while remaining composed and dependable.

From everyday Yaris models to the rally-homologation GR Yaris, AutoUpgrades delivers Toyota performance tuning in Auckland with German precision. The GR Yaris is already special. Properly calibrated, it becomes genuinely crazy good.