Auto Repair & Performance Service You Can Trust
From routine maintenance and diagnostics to brake repair, suspension work, engine service, and performance upgrades, B12 Complete Automotive helps keep your vehicle safe, reliable, and fun to drive.
Complete Auto Repair
Maintenance, diagnostics, brakes, AC, cooling, suspension, and engine service.
Performance Upgrades
Exhaust, intakes, suspension, brake upgrades, tuning support, and custom installs.
Local Shop Experience
Honest recommendations, clear communication, and quality workmanship.
Why Drivers Choose B12
Trusted Auto Repair Serving Dallas, GA
At B12 Complete Automotive, we focus on honest service, quality repairs, and clear communication. Our team helps you understand what your vehicle needs, what can wait, and which repair options make the most sense.
Whether you are scheduling routine maintenance, diagnosing a warning light, repairing brakes, or planning performance upgrades, our local team works to make the process straightforward from start to finish.
Customer Reviews
What Local Drivers Are Saying
We've been customers for years and the transition to the new owners has been great. Fair pricing, timely work, and respectful communication made it easy to keep bringing our vehicles here.
Sam
Friendly, professional, and clear about what my vehicle needed. The service was smooth from start to finish, and I felt confident in the work being done.
Savannah
The team was helpful, honest, and easy to work with. They explained the repair clearly and got everything handled without pressure.
Local Driver
Performance Parts & Accessories
Upgrade Your Vehicle’s Power, Handling & Sound
Looking for more power, sharper handling, stronger braking, or a better exhaust note? B12 Complete Automotive installs performance parts and upgrades with attention to fitment, reliability, and real-world drivability.
- Performance exhaust systems
- Cold air intakes
- Suspension upgrades
- Brake upgrades
- Tuning support
- Custom installs
Services
Auto Repair Services Drivers Commonly Need
Whether your vehicle needs a quick maintenance visit, a warning light diagnosis, or a repair you have been putting off, B12 Complete Automotive provides practical service with clear communication.
Diagnostics
Check engine lights, drivability issues, electrical problems, and hard-to-find concerns.
Brake Repair
Brake pads, rotors, inspections, hydraulic repairs, and performance brake upgrades.
Maintenance
Oil changes, fluids, filters, tune-ups, inspections, and preventative maintenance.
AC & Cooling
AC diagnostics, cooling system service, radiator work, and overheating concerns.
Suspension & Steering
Shocks, struts, steering components, ride quality concerns, and suspension upgrades.
Engine Service
Leaks, drivability problems, mechanical concerns, and repair recommendations.
Certified Experience
ASE Certified Technicians You Can Trust
When you bring your vehicle to B12 Complete Automotive, you get service from professionals who understand modern diagnostics, repair procedures, and dependable workmanship.
- Honest recommendations
- Quality parts and repair procedures
- Clear communication before work begins
- Service for maintenance, repairs, and upgrades
Local Auto Repair Shop
Serving Drivers Across Northwest Metro Atlanta
B12 Complete Automotive is proud to serve drivers throughout Dallas, Kennesaw, Marietta, Acworth, and the surrounding Northwest Metro Atlanta area. Whether you need dependable maintenance, a brake inspection, diagnostics for a warning light, suspension service, or performance upgrade support, our team is here to provide honest recommendations and quality workmanship.
Customers choose our local shop because we make auto repair straightforward. We take the time to explain what your vehicle needs, help you prioritize repairs, and deliver service focused on safety, reliability, and long-term performance.
Locally Owned and Trusted in Dallas, GA
Schedule your visit today for maintenance, repair, diagnostics, or performance upgrades.