1. General Engine Diagnosis
28% of the examIdentify weak areas and improve with focused review.
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Free T1 Practice Test
Pass the Medium-Heavy Truck Certification - T1 Gasoline Engines exam with confidence.
Start with a free T1 practice test and build exam-ready confidence for the Medium-Heavy Truck Certification - T1 Gasoline Engines exam.
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Study by domain
Practice the T1 exam by domain
2. Cylinder Head and Valve Train Diagnosis and Repair
8% of the examIdentify weak areas and improve with focused review.
Start Practicing3. Engine Block Diagnosis and Repair
8% of the examIdentify weak areas and improve with focused review.
Start Practicing4. Lubrication and Cooling Systems Diagnosis and Repair
6% of the examIdentify weak areas and improve with focused review.
Start Practicing5. Ignition System Diagnosis and Repair
12% of the examIdentify weak areas and improve with focused review.
Start Practicing6. Fuel, Air Induction, and Exhaust Systems Diagnosis and Repair
12% of the examIdentify weak areas and improve with focused review.
Start Practicing7. Emissions Control Systems Diagnosis and Repair
10% of the examIdentify weak areas and improve with focused review.
Start Practicing8. Computerized Engine Controls Diagnosis and Repair
16% of the examIdentify weak areas and improve with focused review.
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Frequently asked questions
Straight answers about the T1 exam, the questions, pricing, the free trial, and how this fits your prep.
The T1 exam spans 8 domains - General Engine Diagnosis (28%), Cylinder Head and Valve Train Diagnosis and Repair (8%), Engine Block Diagnosis and Repair (8%), Lubrication and Cooling Systems Diagnosis and Repair (6%), Ignition System Diagnosis and Repair (12%), Fuel, Air Induction, and Exhaust Systems Diagnosis and Repair (12%), Emissions Control Systems Diagnosis and Repair (10%), and Computerized Engine Controls Diagnosis and Repair (16%). Every practice question maps to one of them, so you train on exactly what's tested.
The Medium-Heavy Truck Certification - T1 Gasoline Engines (T1) exam has 60 questions and is completed in 1 hours 15 minutes. Our timed practice tests mirror that length and pacing, so exam day feels familiar.
No - and that matters. These are original practice questions written to mirror the style, difficulty, and domain coverage of the T1 exam blueprint. We never distribute actual exam content, so practicing here keeps you fully compliant with official exam policies.
No. T1 Exam Prep is an independent study resource for Medium-Heavy Truck Certification - T1 Gasoline Engines (T1). 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 T1 domains - General Engine Diagnosis (28%), Cylinder Head and Valve Train Diagnosis and Repair (8%), Engine Block Diagnosis and Repair (8%), Lubrication and Cooling Systems Diagnosis and Repair (6%), Ignition System Diagnosis and Repair (12%), Fuel, Air Induction, and Exhaust Systems Diagnosis and Repair (12%), Emissions Control Systems Diagnosis and Repair (10%), and Computerized Engine Controls Diagnosis and Repair (16%). 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 T1 candidates
Real feedback from T1 candidates on Reddit.
"put this off for weeks then crammed the last few days before my t1. the practice questions on computerized engine controls saved me, that section always confused me on the actual exam. passed, barely studied the other stuff tbh."
"honestly wasnt sure id pass this one, ignition system questions on the real test are weirdly specific. found t1exam.com through a coworker and just grinded the ignition module for about a week. mistake review feature showed me i kept mixing up primary and secondary circuit stuff, fixed that and passed."
"took this a few years after i was already working on gas trucks so figured id breeze thru it. general engine diagnosis section humbled me fast, missed alot of those practice qs at first. kept retaking the mock sections until it clicked, got my results back and passed."