N77 W31144, Hartman Ct Suite F, Hartland, WI 53029----262-370-6122----Mon – Thu: 8:00 AM – 5:00 PM | Fri: 8:00 AM – 4:00 PM
YOUR CAR, OUR CARE
Trusted Auto Repair Serving Hartland & Lake Country
Drivers from Hartland, Oconomowoc, Delafield, and surrounding areas count on Cornell Motors for straightforward advice and dependable repairs.
• Same-Day or Next-Day Service
• Honest Diagnostics — No Unnecessary Repairs
• 25+ Years Experience
• Loaner Cars Available
Your Local Auto Care Expert
We’ve spent years providing dependable auto care, backed by certified technicians and modern repair standards. with a focus on muffler, exhaust, and brake services, our team is committed to keeping every vehicle safe, quiet, and performing at its best. from honest inspections to quality repairs, we put customer trust and long-term reliability at the center of everything we do.
ASE-Certified Technicians with over 25 years experience.
Quality Parts & Fluids for lasting lasting performance.
Honest, Transparent Pricing - No surprises .
Customer-Focused Service from a local team that cares.
Fast Turnaround to get you back on the road safely.
Our Services
We deliver essential auto care services that keep your vehicle safe, quiet, and running smoothly.
from brakes to exhaust and routine maintenance, our experts ensure dependable performance every day.
Brake Repair
Brake pad, rotor, and caliper service with full system inspections to keep your vehicle safe and stopping properly.
Engine Repair
Accurate diagnostics and engine repairs to restore performance, power, and long-term reliability.
Transmission Service & Repair
Transmission fluid service, repairs, and replacements to keep your vehicle shifting smoothly.
General Repair & Maintenance
Complete auto repair and routine maintenance to keep your vehicle running safely and reliably.
MORE SERVICES WE OFFER
Steering & Suspension Work
Alignment, shocks, struts, and steering repairs for a smooth, controlled ride.
Electrical Diagnostics & Repair
Advanced diagnostics and repair for electrical systems and components.
Check Engine Light Diagnostics
Accurate testing to identify warning lights and resolve underlying issues.
Heating & Air Conditioning
A/C repair, recharge service, and heating system diagnostics for year-round comfort.
Oil Changes
Quick, professional oil changes using quality fluids and filters.
Battery & Charging System
Battery replacement and charging system diagnostics to prevent no-start issues.
Cooling System / Radiator Repair
Radiator service, coolant flushes, and overheating problem repair.
Tire Services
Tire mounting, balancing, rotations, and replacements.
Exhaust & Muffler Repair
Exhaust leaks, catalytic converter service, and full system repairs.
Serving Hartland, Oconomowoc, Delafield, Pewaukee & surrounding Lake Country areas
Fuel System Service
Fuel injection cleaning, pump service, and system diagnostics.
Serving Hartland, Oconomowoc, Delafield, Pewaukee & surrounding Lake Country areas
Drivetrain Service
Differential, axle, and 4WD system inspection and repair.
Serving Hartland, Oconomowoc, Delafield, Pewaukee & surrounding Lake Country areas
Preventative Maintenance
Scheduled maintenance services to help prevent breakdowns.ations, and replacements.
Serving Hartland, Oconomowoc, Delafield, Pewaukee & surrounding Lake Country areas
Belts & Hoses Inspection
Inspection and replacement of worn belts and hoses.
Serving Hartland, Oconomowoc, Delafield, Pewaukee & surrounding Lake Country areas
Pre-Purchase Inspections
Detailed vehicle inspections before buying a used car.
Serving Hartland, Oconomowoc, Delafield, Pewaukee & surrounding Lake Country areas
View All Services ----→
Experience You Can See in Every Visit
Local Expertise You Can Count On
At Cornell Auto Repair, we’ve been proudly serving Hartland, North Lake, and the greater Lake Country area for over 25 years. Our ASE-certified technicians provide honest, high-quality auto repair and maintenance for all makes and models.
Trusted by Drivers in Lake Country
From routine oil changes to complex engine repairs, we use advanced diagnostics and quality parts to get you back on the road safely and quickly. Our customers count on us for reliable service, fair pricing, and old-school values with modern technology.
Local People. Local Business. Local Care.
We live and work in this community too. That’s why we treat every customer like a neighbor and every vehicle like our own.
Why Drivers Trust Us
ase-certified technicians
Skilled and reliable.
honest pricing & clear estimates
No hidden fees.
Fast, Same-Day Service Options
Quick repairs.
Quality Parts & Guaranteed Workmanship
Lasting results.
Cornell Auto Repair is conveniently located in North Lake, WI and proudly serves drivers in:
Hartland • Oconomowoc • Delafield • Pewaukee
We also provide auto repair and maintenance services to Nashotah, Chenequa, Merton, Summit, Dousman, and other surrounding Lake Country communities.
N77 W31144 Hartman Court Ste F
Call or text 262-232-6260
Mon – Thu: 8:00 AM – 5:00 PM | Fri: 8:00 AM – 4:00 PM
Areas We Serve
Cornell Auto Repair is located in North Lake, WI and proudly serves Hartland, Oconomowoc, Delafield, Pewaukee and the surrounding Lake Country communities. We also provide expert auto repair and maintenance services to Nashotah, Chenequa, Merton, Summit, Dousman and nearby areas. No matter where you're coming from in Lake Country, you can count on us for honest advice, quality repairs, and friendly hometown service.
Cornell Auto Repair
Serving Hartland, Oconomowoc, Delafield, Pewaukee & surrounding Lake Country areas
keeping your vehicle safe, quiet,
and running smoothly.
Quick links
Services
Engine Repair
Transmission Service
General Repair and Maintenance
Suspension and Steering
View All Services
Contact Details
(262) 232-6260
Contact Details
Business Hours
Mon – Thu: 8:00 am – 5:00 pm
Friday: 8:00 am – 4:00 pm
Sat – Sun: Closed
Walk-ins Welcome
Copyright 2026. Cornell Auto Repair. All rights reserved.