Auto maintenance and repairs in Oshawa—without the guesswork
Come in for routine maintenance, help diagnosing dashboard lights, or repairs like brakes, tires, and A/C. We explain what’s needed, confirm pricing before work starts, and focus on the issues that actually need fixing.
- Fair pricing focus
- Clear repair explanations
- No-pressure recommendations
- prices
- vehicle
- honest
What Locals of Oshawa - O'Neill say about Boss Auto Service
Boss Auto Service is a shop in Oshawa that’s often chosen when car problems feel uncertain—like sudden dashboard warning lights, recurring maintenance needs, or repairs that can quickly get expensive. The approach is practical: we check the vehicle, explain what’s going on in plain language, and help you decide how to proceed before work begins, including confirming price and any possible increase ahead of time. The goal is to keep the process straightforward, from diagnosis through the completed repair.
Services We Provide
Quality work, honest pricing, and repairs done right the first time.
Auto Service And Repair
Comprehensive mechanical service covering every system in your vehicle, big or small.
Car Repair
Expert diagnosis and repair for all makes and models, getting you back on the road fast.
Brake Repair
Full brake system service — pads, rotors, calipers, and fluid — for safe, reliable stopping.
Oil Change
Quick synthetic or conventional oil changes with a complimentary multi-point inspection.
Auto Ac And Heat Repair
Stay comfortable year-round with A/C recharge, heater core, and climate control repair.
Engine Diagnostics
Advanced OBD scanning to accurately pinpoint check-engine lights and performance issues.
Transmission Repair
Automatic and manual transmission rebuilds, fluid flushes, and clutch replacement.
Tire Services
Tire mounting, balancing, rotation, and flat repair for all tire brands and sizes.
Winter Tire Installation
Seasonal changeovers and proper storage to keep you confident on snow and ice.
Auto Wheel Alignment
Precision laser alignment to reduce uneven tire wear and sharpen your steering.
Battery Replacement
Battery testing, replacement, and terminal cleaning to prevent unexpected breakdowns.
Radiator Repair
Coolant flush, radiator repair or replacement, and thermostat service to prevent overheating.
Exhaust Repair
Muffler, catalytic converter, and exhaust pipe repair to cut noise and reduce emissions.
Suspension Repair
Shocks, struts, control arms, and bushings replaced for a smooth, stable, safe ride.
Auto Inspection
Thorough safety inspections that catch issues early before they become costly repairs.
Preventive Maintenance
Scheduled maintenance to extend your vehicle's life and protect its long-term value.
Need something else fixed?
We handle everything from minor maintenance to complex mechanical repairs.
Request an Appointment
Why Drivers of Oshawa - O'Neill Choose Boss Auto Service
Up-front communication before work starts
We inform you of the price before work is done, and if anything changes, we call and confirm how you’d like to proceed.
Focused on what actually needs repair
We take time to check the vehicle and break down what needs fixing without pushing extra work you don’t need.
Support for both service and vehicle purchase
In addition to repairs and maintenance, Boss Auto Service also handles pre-owned vehicle sales, with in-house warranties and in-house financing mentioned as available.
Signals are derived from aggregated public customer feedback trends.
The team at Boss Auto Service is known for fair pricing, clear explanations, and a straightforward process—checking the vehicle, identifying what needs attention, and completing the work efficiently without added pressure.
Find Us in Oshawa
Opening Hours
- Monday9 AM to 5 PM
- Tuesday9 AM to 5 PM
- Wednesday9 AM to 5 PM
- Thursday9 AM to 5 PM
- Friday9 AM to 5 PM
- Saturday9 AM to 2 PM
- SundayClosed
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Helpful Reads
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Preferred shop networks can be convenient, but drivers should understand what the insurer guarantees, what the shop documents, and what may happen if they choose a different repair facility.
How to Protect Your Car's Resale Value After a Collision
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