Thornhill sits on one of the GTA’s busiest commuter and freight corridors — linking Vaughan, Markham, and North York through Highway 7, 407 ETR, and Yonge Street. Between local courier fleets, construction contractors, and small trucking operations, diesel downtime here costs time and money.

Our certified mobile diesel mechanics provide 24/7 on-site repairs, diagnostics, and fleet maintenance anywhere in Thornhill. We come to you — roadside, yard, or warehouse — with fully equipped mobile service units that keep your vehicles running without the tow bill.

Response time: Fast response – call for current availability.

• Fast mobile response throughout Thornhill, Vaughan & Markham
• 24/7 emergency diesel service — nights, weekends, holidays
• Full diagnostics & repair capability on-site
• CVOR-compliant work backed by certified heavy-duty technicians
• Trusted by courier, construction, and regional logistics operators

We cover every major arterial and industrial route through the Thornhill area:

• Highway 404 (between Hwy 401 connector and Aurora Rd)
• Highway 7 / 407 ETR freight corridor
• East Beaver Creek & Leslie Street industrial districts
• Elgin Mills Rd & 16th Avenue warehouse zones
• Bayview Ave & Yonge Street commercial routes
• Viva Bus & Transit fleet service corridors
• Headford Business Park / Red Maple Industrial Area

The Thornhill’s unique weather patterns create specific diesel challenges:

• Gridlock on 407 ramps = overheating & radiator stress
• A/C & alternator load spikes from long idling
• Dust & debris from roadwork clog filters

• Overnight fuel gelling and injector no-starts
• Salt corrosion from local plowing routes
• Electrical failures from cold-weather condensation

• Short urban runs clog DPFs & EGR systems
• Stop-start delivery wear on brakes & clutches
• Humidity in lowlands (East Don River area) causes rust & wiring faults

Our Thornhill’s mobile units arrive equipped for any repair:

• Highway 7 / 407 / Yonge breakdowns & yard calls
• Jump starts, coolant leaks, DEF refills
• Air leaks, mobile welding, on-site troubleshooting

• DPF, EGR, DEF, turbo & injector repairs
• Cooling system & radiator replacement
• ECU diagnostics & electronic tuning

• Brake chamber and airline repairs
• Suspension and spring replacements
• Transmission and clutch service

• Battery, alternator, and starter replacement
• Lighting, wiring, and sensor troubleshooting

• Oil, coolant, and DEF service
• On-site PM inspections for fleets
• DOT / CVOR pre-trip readiness checks

• Langstaff / Highway 7 Business Corridor
• Leslie St / Royal Orchard Industrial Area
• Yonge St / Centre St Commercial Strip
• Dufferin St / Steeles Ave West Distribution Zone
• German Mills & Bayview Industrial Park

• Major travel plazas on Hwy 401, Hwy 403, QEW
• Truck fuel / service centers near Dixie Rd, Hurontario Rd, etc.
• Local fueling depots for fleets

• Amazon YYZ9, Home Depot, Walmart Canada, Costco, FedEx, and local carriers
• Grocery / retail distribution centers (Metro, Loblaw, Walmart)
• Construction, transport, waste management yards
• Manufacturing / fabrication facilities
• Construction company yards
• Refrigerated & delivery operators across York Region

Many Thornhill businesses depend on our fleet services:

• Scheduled maintenance programs
• Priority emergency response
• Volume pricing discounts
• Dedicated fleet technicians
• Customized service plans

We understand:

• 407 ETR congestion = frequent turbo & clutch failures
• Repeated short hauls along Yonge & Centre → DPF buildup
• Electrical shorts common near low-lying Langstaff yards
• Winter corrosion hotspots along Clark Ave & Green Lane
• Rapid parts sourcing from Vaughan & Markham suppliers

• Avoid towing across the 407 / 404 / 400 congestion
• On-site service saves courier fleets hours of downtime
• Great for small & mid-size local contractors
• 24/7 coverage for overnight logistics and early-morning dispatches
• CVOR-compliant repairs protect your fleet record

We also cover:

• Vaughan • Markham • North York • Richmond Hill • Concord
• Highway 7 • 407 ETR • Yonge St • Bayview Ave • Leslie St corridors

We often get calls for:

• Highway 7 @ Bayview Ave — coolant & turbo failures
• 407 ETR ramps @ Dufferin St — brake & clutch issues
• Yonge St / Centre St — alternator & battery faults
• Langstaff Rd / Leslie St — air-line & DPF problems
• Royal Orchard Dr / Bayview Ave — injector & DEF issues

When diesel problems hit — on highway or in yard — don’t waste time with towing and shop delays. Our mobile mechanics bring professional repair services directly to you, 24 hours a day, 7 days a week.

Program our number in your phone now. When you need emergency diesel repair in Thornhill, we’re there to help you.
Service Areas / Neighborhoods Covered:
Thornhill • Royal Orchard • Langstaff • Crestwood • Bayview Glen • Beverley Glen • German Mills • Thornlea • Concord • Yonge / Centre Corridor