Since 1971, Tony's Foreign Cars has been Wilmington's destination for Mercedes-Benz repair and service. Our ASE-certified technicians have deep expertise in Mercedes M274, M256, and OM642 engines, AIRMATIC suspension, and the MBUX infotainment system. We provide the precision service your Mercedes demands. From the bulletproof W123 and W124 to the latest W206 C-Class and EQS, we understand Mercedes engineering across generations. We use XENTRY-level diagnostics, OEM parts, and factory service procedures to keep your Mercedes performing like the day it left Stuttgart — without the dealership price tag.
Mercedes Services We Offer
Comprehensive repair and maintenance for all Mercedes models
Mercedes Engine Diagnostics
Expert diagnostics for M274, M256, M264 engines and OM642 diesels. We address balance shaft issues, oil leaks, and turbo problems with manufacturer-specific fault code analysis.
7G-Tronic & 9G-Tronic Service
Mercedes automatic transmission service, fluid exchange, and conductor plate repair for 7-speed and 9-speed transmissions. We handle the electrical connector leak that plagues these units.
Electrical & MBUX Systems
Mercedes-Benz electrical diagnostics, SAM module repair, MBUX infotainment troubleshooting, and software updates. We diagnose the CAN network issues that cause mysterious electrical gremlins.
AIRMATIC Suspension
AIRMATIC air suspension repair, compressor replacement, strut service, and ABC active suspension maintenance. We offer both OEM and quality aftermarket options.
Brake Service
Mercedes-specific brake service including SBC systems, electronic parking brakes, ADAPTIVE BRAKE, and AMG performance brakes. We handle the SBC system precautions required on older models.
Service A & Service B
Mercedes Service A and Service B maintenance following factory schedules to preserve your vehicle's condition and warranty. We reset the ASSYST system after every service.
Why Choose Tony's for Mercedes Repair?
The independent alternative to the dealership — without compromising on expertise
ASE-Certified Technicians
Our mechanics hold Automotive Service Excellence certifications with specialized training in European and luxury vehicle systems. Continuous education keeps us current with the latest factory technology.
50+ Years Family-Owned
Three generations of the same family have served Wilmington since 1971. We've built our reputation on honest work and lasting relationships — not quick sales.
Genuine OEM Parts
We use factory-original and OEM-equivalent parts that meet manufacturer specifications, preserving your vehicle's performance, warranty, and resale value.
Fair, Transparent Pricing
Dealership-level expertise without dealership-level prices. You approve every repair before it happens, and we explain your options in plain English.
Signs Your Mercedes Needs Service
If you notice any of these symptoms, schedule an appointment — don't wait for a breakdown
Check engine light, especially with rough running or reduced power
AIRMATIC warning or vehicle sitting low after parking
Transmission stuck in limp mode or harsh shifting
Electrical glitches, flickering lights, or random warning messages
Coolant loss or visible leaks under the front of the engine
Brake warnings or SBC system messages on the dash
Mercedes Models We Service
From classics to the latest models, we have you covered
Common Mercedes Issues We Fix
Our experience with these known issues saves you time and money
Balance shaft gear failures on OM642 diesels — a known issue causing check engine lights and timing issues we catch before major damage.
AIRMATIC air suspension compressor and strut failures on S-Class, GL, and ML — we offer rebuild and replacement options.
7G-Tronic conductor plate and speed sensor faults causing limp mode — we repair the electrical connector and replace the plate.
SAM (Signal Acquisition Module) failures causing electrical gremlins — we diagnose and repair rather than replace the entire harness.
Coolant leak from radiator and thermostat housing — common on M272 and M274 engines we repair with updated parts.
SBC brake system warnings and failures on older models — we follow the proper depressurization procedure for safe service.
Our Mercedes Service Process
Transparent, thorough, and professional — every time
Comprehensive Diagnostics
We connect factory-grade diagnostic tools to your vehicle's computer systems, read all fault codes, and perform a thorough visual inspection to identify every issue — not just the obvious ones.
Detailed Estimate & Approval
You receive a transparent, itemized estimate before any work begins. We explain what's needed now, what can wait, and what we recommend — no surprises, no pressure, no hidden fees.
Expert Repair with OEM Parts
Our ASE-certified technicians perform the agreed-upon repairs using genuine OEM or premium aftermarket parts, following factory torque specs and service procedures.
Quality Check & Road Test
Every vehicle gets a post-repair inspection and road test to verify the work. We clear fault codes, confirm proper operation, and clean your vehicle before return.
Mercedes Repair Frequently Asked Questions
Answers to the questions Mercedes owners ask us most
Q.How much does Mercedes repair cost compared to the dealership?
A.Our labor rates are typically 25-35% lower than the Mercedes dealership while using genuine OEM parts. For Service A, Service B, and major repairs, customers routinely save $200-$600. You receive factory-level expertise and diagnostic equipment without the dealership premium.
Q.What's the difference between Service A and Service B?
A.Service A is the minor service (typically around 10,000 miles) including oil change, fluid checks, and basic inspections. Service B is the major service (around 20,000 miles) adding cabin filter replacement, brake fluid flush, and more detailed inspections. We perform both following Mercedes factory procedures and reset the ASSYST system.
Q.Can you service my Mercedes under warranty?
A.Yes. Under the Magnuson-Moss Warranty Act, we can perform maintenance and many repairs without affecting your Mercedes warranty, using OEM parts and factory procedures. We provide documented service records. For warranty-covered failures, you'd return to the dealer, but routine service and out-of-warranty repairs are our specialty.
Q.My Mercedes has AIRMATIC suspension — can you service it?
A.Absolutely. We have extensive experience with AIRMATIC air suspension on S-Class, E-Class, GL, ML, and GLE models. We diagnose compressor failures, leaking struts, and valve block issues, and offer both OEM and quality aftermarket options to fit your budget.
Q.Do you work on AMG models?
A.Yes. We service all AMG models including C63, E63, G63, GT, and AMG variants. Our technicians understand the performance brake systems, hand-built engines, and the specific service requirements that differentiate AMG from standard Mercedes models.
Q.Do you service Mercedes Sprinter and Metris vans?
A.Yes. We service Sprinter vans with the OM642 diesel and the 4-cylinder engines, as well as Metris vans. Many commercial customers trust us for fleet service because we understand the diesel systems and the higher maintenance demands of commercial use.
Serving Mercedes Owners Throughout the Cape Fear Region
Conveniently located in Wilmington, NC, Tony's Foreign Cars is the trusted Mercedes repair shop for drivers throughout the Cape Fear region and coastal North Carolina.