Kia Specialist in San Marcos, CA
Proudly Serving San Marcos and North County
Big Bad Auto is the trusted Kia repair shop for drivers throughout San Marcos and the surrounding North County communities, including Escondido, Vista, Carlsbad, Encinitas, and San Elijo Hills. Our convenient location, honest pricing, and dealership-level expertise make it easy to keep your Kia running right without the dealership wait times or markup.
Expert Service for Every Kia Model
Whether you drive a compact Forte or K4, a stylish K5 sedan, a versatile Soul or Seltos, a rugged Sportage or Sorento, a family-ready Telluride or Carnival, or one of Kia’s newest EVs like the EV6, EV9, and Niro, our ASE-certified technicians have the training and tools to service it correctly the first time.
Our Kia Services
Brake Inspection & Repair
Full brake inspections, pad and rotor replacement, and fluid service to keep your Kia stopping safely.
Suspension & Steering
Shocks, struts, and steering component repair for a smooth, controlled ride on every drive.
Check Engine Light Diagnosis
Accurate diagnostic testing to pinpoint warning lights and recommend the right fix, not just a guess.
Oil Changes & Scheduled Maintenance
Factory-recommended maintenance that protects your warranty and extends your Kia’s lifespan.
Computer Diagnostics
Advanced scan tools identify electronic and sensor issues specific to Kia’s onboard systems.
Battery, Starter & Alternator
Testing and replacement to resolve starting and charging issues before they leave you stranded.
Cooling System Repair
Radiator, water pump, and coolant service to prevent overheating in every season.
Engine Repair
From minor repairs to major rebuilds, our team restores engine performance and reliability.
Transmission & Drivetrain
Transmission service and drivetrain repair for smooth shifting and dependable power delivery.
Wheel Alignment & Tires
Precision alignments and tire service that improve handling and extend tire life.
Air Conditioning & Climate Control
A/C recharge and repair to keep your cabin comfortable through San Marcos summers.
Electrical Repair & Pre-Purchase Inspections
Wiring, lighting, and electrical diagnostics, plus thorough inspections before you buy a used Kia.
Honest Diagnosis. Transparent Recommendations.
We believe in doing it right the first time. Every Kia that comes through our shop receives a thorough, professional diagnosis, a clear explanation of what it needs, and an upfront quote before any work begins. No surprise charges, no upselling—just quality repairs you can trust, backed by genuine parts and experienced technicians.
Ready to Get Your Kia Serviced Right?
Schedule an appointment with Big Bad Auto today and experience dealership-quality Kia care at a fair price, right here in San Marcos.




