QUALIFIED MERCURY MECHANICS
D. Wells Automotive Service is Gurnee’s trusted Mercury repair shop, proudly serving the Lake County area since 1967. For over 55 years, our experienced technicians have provided comprehensive care for Mercury vehicles, including repairs, maintenance, tune-ups, and tires. Whether you drive a Grand Marquis, Mountaineer, Mariner, Milan, or any other Mercury model, our team has the expertise and equipment to keep your vehicle running reliably for years to come.
Though Mercury production ended in 2011, these well-built vehicles continue to serve their owners faithfully throughout Lake County. Our technicians have decades of experience working on Mercury’s Ford-based platforms and understand the unique characteristics of these dependable vehicles. From the body-on-frame Grand Marquis to the fuel-efficient Milan sedan, we know what it takes to maintain and repair your Mercury properly.
Your Mercury deserves expert care from mechanics who understand its engineering and can source the right parts to keep it running strong. From routine maintenance to major repairs, our certified technicians have the knowledge to handle all your Mercury service needs.
Schedule your Mercury service appointment with D. Wells Automotive Service today and keep your vehicle running for many more miles.


Quality Guarantee
All diagnostic work and subsequent repairs are backed by our comprehensive warranty covering up to 3 years or 36,000 miles. We stand behind our diagnostic accuracy and repair quality.
What Makes Our Diagnostics Different:
- Accurate problem identification the first time
- Honest repair recommendations without unnecessary work
- Transparent pricing with detailed explanations
- Fast turnaround to minimize your downtime
Mercury Repairs, Service, and More!
At D. Wells Automotive Service, our experienced mechanics provide top-notch service for all Mercury models throughout Lake County. We don’t just meet expectations—we exceed them by offering personalized care and expertise for these discontinued but still dependable vehicles. Our shop is equipped with professional-grade diagnostic equipment that interfaces with Mercury’s onboard computer systems, allowing us to accurately diagnose issues and perform repairs efficiently, even as these vehicles age.
Our ASE-certified technicians have extensive experience working on Mercury vehicles and their Ford-based platforms. We understand the common issues Mercury owners face, including intake manifold gasket leaks on 3.8L and 4.6L engines found in the Grand Marquis and Mountaineer, transmission concerns in older models, suspension wear in body-on-frame vehicles, and electrical issues with lighting and power accessories. Whether your Grand Marquis needs brake work, your Mariner requires engine diagnostics, or your Milan needs routine maintenance, we have the knowledge and experience to handle it correctly.
We go the extra mile by performing comprehensive multi-point inspections with every service, paying special attention to the age-related wear patterns common in Mercury vehicles. Our mechanics take the time to explain your vehicle’s needs honestly and help you prioritize repairs to keep your Mercury running safely and reliably. We maintain strong relationships with quality parts suppliers to ensure we can source the right OEM and premium aftermarket parts for your Mercury, even as original parts become harder to find. From oil changes and tire services to engine repairs and electrical diagnostics, D. Wells Automotive Service delivers the expert care your Mercury needs. Our commitment to keeping older vehicles on the road has made us Lake County’s trusted Mercury service center since 1967.

Our Core Services
- Suspension
- Steering
- Tire Services & Alignment
- Exhaust System Repair
- Check Engine Light Diagnostics
- State Inspections
- Pre-Purchase Inspections
Why Choose D. Wells for Your Mercury?
- ASE-Certified Technicians
- Advanced Diagnostic Equipment
- Quality Parts (OEM or premium aftermarket)
- Transparent Communication
- Family-Owned & Operated (since 1967)
- Warranty Protection
- Convenient Location (serving Gurnee & Lake County)

Common Mercury Services & Repairs
Mercury vehicles, though no longer in production, share common maintenance and repair needs that our technicians address regularly. Intake manifold gasket failures are frequent on Grand Marquis and Mountaineer models equipped with 3.8L and 4.6L V8 engines, causing coolant leaks and overheating issues. Transmission services and repairs are essential for maintaining smooth operation, particularly in older Grand Marquis and Sable models with high mileage. Suspension component replacement is common, especially on body-on-frame vehicles like the Grand Marquis and Mountaineer, where ball joints, tie rod ends, and control arm bushings wear over time. Air suspension system repairs are necessary for Grand Marquis models equipped with air ride suspension, which can develop leaks and compressor failures. We also frequently service cooling systems, replacing aging radiators, water pumps, and thermostats to prevent overheating. Our technicians understand these Mercury-specific issues and have the experience to diagnose and repair them efficiently, keeping your vehicle reliable for daily transportation.
Schedule An Appointment
Don’t trust your Mercury to just any mechanic. At D. Wells Automotive Service, we combine expert knowledge, state-of-the-art equipment, and genuine care to keep your vehicle running reliably. Serving Gurnee, neighboring communities, and all of Lake County since 1967, we’re your trusted partner for all Mercury service and repair needs.
