TT AUTO'S Engineering
Engineering Tools
Practical tools for comparing cars, planning ownership costs, decoding faults, and choosing the right model year.
01
Vehicle Comparison
Compare reliability scores, known risks, strengths, and inspection priorities side by side.
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02
Ownership Cost Calculator
Build a realistic annual maintenance and repair reserve from vehicle, age, mileage, and history.
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03
Fault-Code Library
Understand common OBD fault codes, likely systems, first checks, and when to stop driving.
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04
Model-Year Guides
See how one production year changes the reliability picture for a specific model.
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