About CarsFixer
Empowering everyday drivers, car buyers, and DIY mechanics with dealer-level technical specs, free interactive lookup tools, and plain-English automotive guidance.
Ayman Davis
Founder & Chief Automotive Editor, CarsFixer.com
Ayman Davis is the founder and chief editor of CarsFixer.com, an independent automotive information and diagnostic platform created to help drivers make smarter decisions about vehicle maintenance, pre-purchase inspections, error diagnostics, and DIY repair costs.
With over a decade of hands-on automotive diagnostics experience, Ayman specializes in translating intricate automotive engineering concepts and cryptic OBD-II trouble codes into clear, actionable guides that everyday car owners can confidently apply. His editorial focus spans engine and transmission diagnostics, preventive maintenance schedules, used car evaluations, fluid viscosity ratings, and shop quote auditing.
Every guide, spec database, and interactive calculator published on CarsFixer is rigorously researched, fact-checked, and cross-referenced against factory OEM technical literature. Ayman's primary goal is to provide honest, transparent, and accurate automotive intelligence that protects readers from expensive mechanic overcharges, extends vehicle lifespans, and simplifies car ownership.
CarsFixer combines factory service manuals, manufacturer recall bulletins, industry engineering best practices, and practical problem-solving to create a world-class automotive resource accessible to drivers worldwide.
Areas of Technical Expertise
Our Editorial & Integrity Pledge
Every guide published on CarsFixer is created with an uncompromising commitment to accuracy, safety, and reader-first transparency. We do not accept paid placements or sponsored recommendations that compromise objective mechanical guidance. All technical data is continuously audited against updated OEM bulletins.
Our Mission & Guiding Pillars
CarsFixer was founded to bridge the information gap between dealership service departments and everyday vehicle owners.
1. Demystifying Jargon
We translate cryptic OBD-II trouble codes, mysterious warning lights, and technical acronyms into plain, understandable language with actionable fix steps.
2. Cost Transparency
We provide realistic dealer quote estimates vs. DIY raw parts costs, empowering car owners to negotiate fair prices and avoid predatory shop fees.
3. Preventive Longevity
We help drivers keep their vehicles running reliably well past 200,000 miles by offering customized mileage-based OEM service intervals and inspection tools.
How We Verify Technical Information
We rely on authoritative primary engineering references to guarantee accuracy across every vehicle make and model.
Factory Service Data
Cross-referenced with manufacturer repair databases (Toyota TIS, Ford PTS, GM SI, Mitchell 1).
Safety Bulletins
Integrated with live National Highway Traffic Safety Administration databases for recall monitoring.
Standardized DTCs
Formatted according to SAE J1979 and ISO 15031-5 standards for generic and enhanced powertrain codes.
Fluid & Oil Ratings
Engine oil capacities and viscosity recommendations matched with American Petroleum Institute standards.
Explore Our Free Tools
Access our complete suite of automotive lookup tools, calculators, and spec search engines.
✓ VIN Decoder
Decode 17-digit VIN numbers to instantly reveal vehicle specifications, engine details, and safety recall information.
✓ OBD2 Code Lookup
Search diagnostic trouble codes (DTCs) to understand check engine light causes, symptoms, and fix procedures.
✓ Dashboard Lights
Identify instrument cluster symbols quickly to determine if immediate safety action or service is needed.
✓ Oil Capacity Finder
Find exact engine oil viscosity grades (0W-20, 5W-30) and quart refill capacities across major vehicle models.
✓ Maintenance Schedule
Generate customized OEM service intervals tailored to your vehicle mileage and driving conditions.
✓ Repair Calculator
Estimate realistic mechanic shop repair quotes versus raw parts costs for smart budgeting.
✓ Used Car Checklist
Interactive 50-point pre-purchase vehicle evaluation checklist covering engine, body, interior, and road test.
✓ DIY Repair Guides
Clear, practical step-by-step repair guides covering brakes, filters, spark plugs, and common maintenance tasks.
Our Editorial Principles
We follow strict guidelines to ensure our content is reliable, clear, and actionable.
Technical Accuracy
All technical specs and code explanations are thoroughly verified against OEM service literature.
Plain-English Clarity
We translate complex engineering jargon into straightforward language for everyday car owners.
Regular Updates
Databases and guides are continuously updated to reflect new vehicle models and service updates.
Complete Independence
We maintain full editorial independence with transparent, objective diagnostic logic and zero paywalls.
Actionable Safety Advice
We focus on actionable, real-world advice and clear safety precautions for working around vehicles.
Frequently Asked Questions
Common questions regarding our free tools, diagnostic database accuracy, and review standards.
Is CarsFixer completely free to use?
Yes, 100% of our diagnostic tools, OBD-II lookup databases, repair cost estimators, maintenance schedules, and oil capacity guides are completely free with zero subscription fees or paywalls.
Where does CarsFixer source its automotive data?
Our data is compiled directly from official OEM service manuals, Technical Service Bulletins (TSBs), SAE International OBD-II documentation (SAE J1979), and NHTSA safety recall databases.
How often are the databases updated?
Our automotive editorial and technical team audits and updates the diagnostic databases regularly to include new vehicle model years, updated OEM repair procedures, and the latest diagnostic trouble codes.
Have Feedback or Questions?
We welcome feedback, repair suggestions, error reports, and automotive questions from our community. Reach out directly to our editorial desk.
CarsFixer
Practical automotive diagnostic tools, maintenance specs, and repair information.