Rotary Performance Modifications

Mechanical work on all makes and models

About B3 Automotive

B3 Automotive was established as a sister company to Car Air in 2016.  Our fully equipped workshop is located in Mount Maunganui, NZ and has been doing performance modifications for 10 years in conjunction with our specialist automotive air conditioning and standard mechanical repairs.


Our friendly staff have a wealth of experience and expertise to offer our customers and are always willing to go the extra mile to get the best out of your vehicle.

Our Speciality

We specialise in rotary performance modifications of street and race cars but also undertake a wide variety of mechanical work on all makes and models from simple upgrades to get the best out of what you already have through to full turnkey engine conversions. And there is more we can do…

We Do More

Other examples of what we can do and all fully customised to suit your car!

Brake Upgrades

Full Suspension Upgrades

Diff Conversions


Exhaust Systems

Fuel Systems

Intercooler Setups

ECU Installs

Mazda Rotary Services

We also offer a full range of Mazda Rotary specific services such as compression testing, clearancing, balancing, porting, and full engine builds from mild to wild!

Contact Us

Our team of experts would be delighted to talk with you about all your vehicles mechanical needs.

B3 Automotive

Unit 2-3 / 138 Newton Street

Mount Maunganaui 3116

Open: Monday-Friday 8am-5pm