1. Scan Tool Application Basics
Key exam domainIdentify weak areas and improve with focused review.
Start PracticingPass your ASD certification
Free ASD Practice Test
Pass the Automotive Scanner Diagnostics Certification - Zeus+ Navigation and Scanner Operation exam with confidence.
Start with a free ASD practice test and build exam-ready confidence for the Automotive Scanner Diagnostics Certification - Zeus+ Navigation and Scanner Operation exam.
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Everything your ASD certification prep needs
Practice expert-vetted questions, find your weak domains, and turn every mistake into a focused review plan.
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Practice the ASD exam by domain
2. Hardware and Software Navigation
Key exam domainIdentify weak areas and improve with focused review.
Start Practicing3. Vehicle Communication Software (VCS) Navigation
Key exam domainIdentify weak areas and improve with focused review.
Start Practicing4. Diagnostic Trouble Code Retrieval & Online Information Access
Key exam domainIdentify weak areas and improve with focused review.
Start Practicing5. Viewing & Interpreting Scanner Data
Key exam domainIdentify weak areas and improve with focused review.
Start Practicing6. Fast-Track® Troubleshooter
Key exam domainIdentify weak areas and improve with focused review.
Start Practicing7. Functional Tests
Key exam domainIdentify weak areas and improve with focused review.
Start Practicing8. Global OBD II & Generic Functions
Key exam domainIdentify weak areas and improve with focused review.
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Frequently asked questions
Straight answers about the ASD exam, the questions, pricing, the free trial, and how this fits your prep.
The ASD exam spans 8 domains - Scan Tool Application Basics, Hardware and Software Navigation, Vehicle Communication Software (VCS) Navigation, Diagnostic Trouble Code Retrieval & Online Information Access, Viewing & Interpreting Scanner Data, Fast-Track® Troubleshooter, Functional Tests, and Global OBD II & Generic Functions. Every practice question maps to one of them, so you train on exactly what's tested.
No - and that matters. These are original practice questions written to mirror the style, difficulty, and domain coverage of the ASD exam blueprint. We never distribute actual exam content, so practicing here keeps you fully compliant with official exam policies.
No. ASD Exam Prep is an independent study resource for Automotive Scanner Diagnostics Certification - Zeus+ Navigation and Scanner Operation (ASD). It is not affiliated with, sponsored by, or endorsed by the official certifying body or exam administrator.
Every paid plan unlocks the full bank of 1,000+ practice questions covering all 8 ASD domains - Scan Tool Application Basics, Hardware and Software Navigation, Vehicle Communication Software (VCS) Navigation, Diagnostic Trouble Code Retrieval & Online Information Access, Viewing & Interpreting Scanner Data, Fast-Track® Troubleshooter, Functional Tests, and Global OBD II & Generic Functions. You can practice the whole bank, filter by domain, or run a timed, domain-balanced exam simulation.
Yes - the bank is maintained against the current exam outline, and questions are revised when the exam changes.
No honest practice platform can guarantee a pass. What realistic practice does is show you - before exam day - exactly which domains are weak, and give you the repetitions to fix them. That's the difference between hoping you're ready and knowing where you stand.
Yes. You get 10 free sample questions with instant feedback - no credit card and no account required.
The free sample shows you the question quality. Paid plans unlock the full 1,000+ question bank, exam-style practice modes, mistake review, and - on Fast Track and Pass Confidence - progress analytics that show your readiness by domain.
No. Every plan is a single one-time payment for a fixed access window - 48 hours, 7 days, or 6 weeks. There is no auto-renewal and no recurring billing.
Match it to your exam date: Final Review (2 days) for an exam in the next day or two, Fast Track (7 days) for an exam this week, Pass Confidence (6 weeks) for a structured run-up.
For most countries, the price you see is exactly what you pay - tax is already included. Where local law requires it to be added separately, it's shown clearly at checkout before you pay, so there are never any surprise fees.
Access is instant after payment and runs for your plan's full window from that moment. When the window ends, your local progress stays on your device - you can buy another window any time and pick up where you left off.
Yes - the whole platform is mobile-first: practice, mistake review, and analytics all work on any phone, tablet, or laptop with a browser. Nothing to install.
Every answer feeds your per-domain accuracy, readiness score, and weak-area list. Instead of re-reading everything, you drill the domains that are actually costing you points - that's what moves a score in days, not months.
Chat with us any time - the 24/7 support chat in the corner of every page gives instant answers about plans, access, and billing. Prefer email? The contact link is in the footer. Payments are processed securely by Stripe, and active customers can download an invoice from their profile page.
Make sure you're signed in with the same email you used at checkout - access activates within a minute of payment. If it still doesn't appear, email us from the contact link in the footer and it'll be sorted out.
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Trusted by ASD candidates
Real feedback from ASD candidates on Reddit.
"put this off for weeks then had like 4 days left. the practice questions on the DTC retrieval stuff saved me, kept missing those in the mock runs until it clicked. passed first try, still kinda surprised."
"honestly wasnt sure a website could actually prep you for the hands on side but the VCS navigation section walkthroughs matched alot of what showed up on my lab day. asdprep.com was the only thing i used besides actual shop time."
"failed the practice exam twice before it started making sense. the mistake review thing where it shows you what you got wrong on the scanner data interpretation questions is what finally got me over 70%. no complaints."