Start with the evidence.
Enter year, make, model, engine and mileage. Add symptoms, warning lights and any trouble codes—because a code alone is not a diagnosis.
AI diagnostics / Evidence first
Find the fault.
Skip the guesswork.
An AI diagnostic assistant for DIY owners and independent mechanics. Turn symptoms and trouble codes into a clear testing plan—not a shopping list of parts.
For everyday faults. With a European-car focus.
Symptoms → Evidence → Next testWrenchwise / 01
Our promise, from day one
Safety before shortcuts Reasoning, not certainty Tests before parts
From a warning light to a way forward
A second opinion.
A smarter next step.
You bring the vehicle details. Wrenchwise helps organize the evidence into a plan you can actually work through.
European cars. Real-world thinking.
Shaped by hands-on automotive experience and the diagnostic perspective behind Crossline Euro. Built for owners who want to understand—and mechanics who want another angle.
Narrow the possibilities.
Get ranked possible causes, the reasoning behind each, and follow-up questions that help separate a likely fault from a costly distraction.
Test before you replace.
Follow a structured plan with next tests, tools, difficulty and safety warnings. Consider repair options only after the evidence points there.
Inside your diagnostic plan
Less noise. More direction.
See what could explain the fault, what evidence is missing, and which test should come next. Repair-cost ranges are included only where reliable data is available.
Illustrative workflow / P0301
Cylinder 1 misfire ≠ replace the coil.
First gather context: when does it happen? Then distinguish ignition, fueling and mechanical causes with targeted checks.
A testing direction—not a confirmed diagnosis.
Choose your level of support
Clarity for your next repair.
Explore the available plans and their included diagnostic access. Review current pricing and limits before you choose.
Free
For individuals getting started
$0/month
- 1 workspace
- Up to 3 team members
- Basic analytics
- Community support
Wrenchwise provides diagnostic guidance, not a substitute for physical inspection or a qualified technician. Stop driving if a fault makes the vehicle unsafe.
Your next move starts here
Don’t throw parts at a problem.
Bring your symptoms, your codes and your questions. Leave with a clearer direction for what to test next.