Trade · ONET 49-3023.00
Automotive Service Technician
Diagnoses, maintains, and repairs cars and light trucks: gasoline, diesel, and electric.
What the work looks like
Auto techs work in dealership service departments, independent shops, and fleet garages. A shift mixes scheduled maintenance (oil, brakes, tires, fluids) with diagnostic work on engine management, drivetrain, suspension, and electrical systems. Modern vehicles require scan tool interpretation, programming, and calibration of ADAS sensors. EV work layers in high-voltage safety and battery diagnostics.
Physical demands
- Working at height on lifts and under vehicles
- Lifting tires, batteries, and transmissions
- Exposure to brake dust, fuels, and solvents
- Precise hand work on small components
- Standing and walking for full shifts
Common tools
- Scan tool (OEM or aftermarket)
- Digital multimeter and scope
- Torque wrench set
- Impact gun and socket set
- Brake lathe and tire machine (shop owned)
- Thermal and leak detection tools
Union and non-union paths
Auto service work is largely non-union. The Machinists (IAM) represent some dealership techs and fleet mechanics. Dealer and chain-store techs typically work on flat-rate pay (paid per job), while independent-shop techs are more often hourly.
How to enter
Entry routes include two-year community college and tech school programs (often manufacturer-branded: Ford ASSET, GM ASEP, Toyota T-TEN, etc.), trade school programs like UTI and Lincoln Tech, and the military. ASE (Automotive Service Excellence) certifications are the industry-standard credential. EV-specific training is rapidly becoming a requirement.
Specialty paths in this trade
Most states license one automotive service technician classification, but the work splits into distinct paths with different schedules, tools, and wage schedules. Read before choosing a program.
General Service Technician
Entry-level tech doing maintenance work: oil and filter, tire rotations, brakes, batteries, fluids, belts, hoses, and light inspections. The common starting point in dealer service lanes and independent shops.
Typical scope
- Oil, filter, and fluid services
- Tire mounting, balancing, and rotations
- Brake pad and rotor replacement
- Battery and wiper replacement; basic inspections
Entry: On-the-job training, high-school auto programs, or a community-college maintenance-and-light-repair certificate. ASE G1 Auto Maintenance and Light Repair is the common entry credential.
Wage note: Typically hourly in independent shops; flat-rate in dealerships on simple jobs. Base of the ladder. The path up is through ASE tests and diagnostic skill.
Drivability Specialist (ASE L1)
Engine performance and emissions diagnostics. The tech who solves the check-engine-light cases other techs hand off. Requires scope, scan-tool fluency, and fuel-trim and misfire analysis.
Typical scope
- OBD-II diagnostics, mode-6 and freeze-frame analysis
- Fuel-trim, misfire, and catalytic-efficiency diagnosis
- Ignition, fuel-delivery, and sensor circuit testing
- Emissions testing and state inspection work where applicable
Entry: Typically 3 to 5 years of general service experience plus the ASE L1 Advanced Engine Performance Specialist exam (requires A8 Engine Performance as a prerequisite).
Wage note: Drivability techs commonly sit above general service rates on the flat-rate scale because diagnostic hours are billed at premium rates in most shops.
Transmission and Drivetrain Specialist
Focused track on automatic and manual transmissions, transfer cases, differentials, and driveline components. Work splits between R&R (remove-and-replace reman units) and internal rebuilds in shops that still do them.
Typical scope
- Transmission R&R and fluid-and-filter service
- Internal rebuilds in specialized shops
- Transfer case, differential, and driveline service
- Electronic transmission control diagnostics and adaptive-learn resets
Entry: General service foundation plus ASE A2 Automatic Transmission and A3 Manual Drivetrain. Transmission-rebuild shops often train internally or require prior experience.
Wage note: Transmission specialists commonly bill at a higher flat-rate tier. Independent transmission shops and chain transmission specialists (AAMCO, Cottman) pay distinctly from general repair.
EV / Hybrid Specialist (ASE L3)
High-voltage battery, inverter, motor, and thermal-management work on hybrids, plug-in hybrids, and full EVs. High-voltage safety training is non-negotiable. Scope is growing as fleets age into out-of-warranty work.
Typical scope
- High-voltage isolation, lockout, and PPE procedures
- Battery-pack diagnosis, module testing, and service
- Inverter, drive motor, and charger diagnosis
- Thermal-management system service on EV battery and cabin systems
Entry: ASE L3 Light Duty Hybrid/Electric Vehicle Specialist requires A6 Electrical/Electronic Systems as a prerequisite. OEM high-voltage training (Toyota, Ford, GM, Tesla, Hyundai/Kia) is commonly required at dealer level.
Wage note: EV-capable techs command premiums in markets with EV density. Compensation varies sharply by metro and OEM dealer network.
Diesel Service Technician
Light-duty diesel (3/4-ton and 1-ton pickups) and medium-duty truck work. Emissions systems (DPF, DEF, EGR), fuel systems, and turbochargers dominate the caseload. Overlaps with but distinct from heavy-truck diesel (O*NET 49-3031).
Typical scope
- Diesel fuel system and injector service
- DPF regeneration, DEF systems, and emissions diagnosis
- Turbocharger and EGR service
- Heavy lifting and larger fasteners than gas work
Entry: Diesel-specific community college or tech school programs (WyoTech, UTI, Lincoln Tech diesel tracks). ASE L2 Electronic Diesel Engine Diagnosis Specialist is the capstone credential on the light-duty side.
Wage note: Diesel service commonly pays above gas-engine service in the same shop. Dealer networks (Ford Power Stroke, GM Duramax, Ram Cummins) and fleet shops are the main employers.
Shop Foreman / Master Technician
Top of the ladder in most shops. Master-level techs handle the hardest diagnostics, mentor junior techs, coordinate jobs across bays, and often approve estimates. ASE Master status is the standard credential.
Typical scope
- Complex diagnostic escalations across all systems
- Technical mentorship and training for junior techs
- Job coordination, quality check, and comeback analysis
- OEM liaison on warranty and technical-assistance cases
Entry: ASE Master Automobile Technician (A1 through A8 all current) plus multiple years of journey-level experience. L1, L2, or L3 advanced specialist status is commonly expected on top.
Wage note: Shop foremen are often paid a hybrid of flat-rate production plus a salary component or hourly override. Master techs at dealer level commonly sit at the top of the local scale.
Residential, commercial, industrial
Auto service does not split cleanly into commercial and residential. The real split is by employer type: dealer/franchise, independent shop, fleet/municipal, and performance/race. Each has distinct pay structures, tool expectations, and career ladders.
Certifications that unlock premium work
Credentials beyond the state license. Each one opens a specific segment of work where the qualified pool is smaller.
ASE A1–A8 + Master Automobile Technician ↗
ASE Automobile tests A1 through A8 (Engine Repair, Automatic Transmission, Manual Drivetrain, Suspension/Steering, Brakes, Electrical/Electronic, Heating and Air Conditioning, Engine Performance) are the industry-standard credentials. Passing all eight plus the required experience earns ASE Master Automobile Technician status, widely requested by dealers and chain shops and used in most flat-rate tiering.
Issuer: ASE (National Institute for Automotive Service Excellence)
ASE A9 Light Vehicle Diesel Engines ↗
A9 covers diesel engines in light vehicles (3/4-ton and 1-ton pickups and similar). Used by dealers and independents doing Power Stroke, Duramax, and Cummins pickup work.
Issuer: ASE
ASE L1 Advanced Engine Performance Specialist ↗
L1 is the advanced drivability credential. It requires A8 Engine Performance as a prerequisite and tests deep diagnostic skill on OBD-II, fuel trim, misfire, and emissions. Commonly requested for drivability bay assignments and state-inspection emissions work.
Issuer: ASE
ASE L2 Electronic Diesel Engine Diagnosis Specialist ↗
L2 is the advanced diesel drivability credential for medium and heavy trucks. Required or preferred at many diesel-dealer and fleet shops for advanced emissions and fuel-system diagnostics.
Issuer: ASE
ASE L3 Light Duty Hybrid/Electric Vehicle Specialist ↗
L3 is the advanced credential for hybrid and EV diagnostics. Requires A6 Electrical/Electronic Systems as a prerequisite. The emerging capstone for EV-capable technicians independent of any single OEM.
Issuer: ASE
EPA Section 609 Motor Vehicle A/C Certification ↗
EPA Section 609 certification is federally required for any technician who services motor-vehicle air-conditioning refrigerant (40 CFR Part 82 Subpart B). Required to purchase refrigerant in containers smaller than 20 lb. Base compliance credential for any tech doing A/C work.
Issuer: EPA-approved providers (MACS, ESCO, Mobile A/C Society)
Toyota T-TEN (Technician Training and Education Network) ↗
Toyota-authorized technician training program delivered through partner community colleges. Graduates enter Toyota and Lexus dealer networks with OEM-specific training already in hand.
Issuer: Toyota Motor North America
Ford FACT / ASSET ↗
Ford Accelerated Credential Training (FACT) and Automotive Student Service Educational Training (ASSET) are Ford's authorized dealer-tech pipelines, delivered through partner schools. Direct entry into Ford and Lincoln dealer service.
Issuer: Ford Motor Company
GM ASEP (Automotive Service Educational Program) ↗
GM's dealer-tech training program delivered through partner community colleges. Graduates enter Chevrolet, Buick, GMC, and Cadillac dealers with GM-specific training.
Issuer: General Motors
Honda PACT (Professional Automotive Career Training) ↗
Honda's dealer-tech training program delivered through partner schools. Direct pipeline into Honda and Acura dealer service networks.
Issuer: American Honda Motor Co.
Mopar CAP (Career Automotive Program) Local ↗
Stellantis (Chrysler, Dodge, Jeep, Ram) dealer-tech program. Mopar CAP Local is delivered through partner community colleges for entry into Stellantis dealer service.
Issuer: Stellantis / Mopar
Tesla START ↗
Tesla's technician training program, delivered through partner community colleges. Covers EV-specific systems, high-voltage safety, and Tesla service procedures. Direct entry into Tesla service centers.
Issuer: Tesla, Inc.
Bosch Automotive Service Technician Training ↗
Bosch supplies diagnostic equipment, fuel systems, and electronics to most OEMs. Bosch training is commonly requested for advanced drivability and European-vehicle service, particularly on diesel, gasoline direct injection, and ABS/ESC systems.
Issuer: Robert Bosch LLC
Tool and equipment investment
Apprentice, year 1
$2,000 to $5,000 for a starter personal kit: ratchets, socket sets (metric and SAE, standard and deep), combination wrenches, screwdrivers, pliers, pry bars, a torque wrench, a digital multimeter, and a basic roll-around tool cart. Shops supply lifts and larger gear; hand tools are on the tech.
Journey level
$10,000 to $30,000 over time for a full tool box: a stacked tool chest (Snap-on, Mac, Matco, or equivalent), bidirectional scan tool, specialty sockets and pullers, torque-angle adapter, air tools, a transmission jack, and brand-specific diagnostic adapters. Toolbox alone often runs $5,000 to $15,000.
Going independent
$150,000 to $500,000+ for a shop with two or more lifts, an alignment rack, a tire machine and balancer, shop-owned scan tools across OEMs, a/c recovery machines, diagnostic-network subscriptions (AllData, Mitchell, Identifix, OEM service info), plus insurance, rent, and parts-account deposits. Mobile-diagnostic startups sit at the lower end; full-service independents at the top.
Auto service is one of the most tool-heavy trades in the catalog. Tool trucks (Snap-on, Mac, Matco, Cornwell) extend financing to techs, but the interest and payment cycle is a real cost of doing business. Ask a prospective shop which tools they supply (scan tools, specialty pullers, lifts) before accepting an offer.
Wages
National median
$49,670
annual, all workers
National mean
$55,260
annual, all workers
By pilot state
BLS OOH tracks auto service technicians and mechanics. The fleet is growing; EV transition is shifting skill requirements without reducing overall demand.
BLS OES 49-3023 Automotive Service Technicians and Mechanics publishes statewide and metropolitan median and mean wages (all-worker, across dealer, independent, and fleet). Major metros and regions with dense OEM dealer networks (e.g., Detroit and surrounding Michigan, Los Angeles, Dallas–Fort Worth, Atlanta, Chicago) commonly pay above their statewide median; rural and small-metro work often pays below. OEM density drives significant variance. Techs in metros with a major OEM assembly and engineering footprint often have access to higher-paying dealer-network positions than comparable metros without. Check the BLS OES metropolitan tables for your target area before relocating. Source: BLS OES 49-3023, https://www.bls.gov/oes/current/oes493023.htm.