Reference Tables
Quick-reference tables, charts and standards.
Tyre Size Notation Explained
How to read tyre sidewall markings like 205/55R16. Common UK sizes, speed ratings and load indices.
UK Fuel Type Comparison
Petrol vs diesel vs E10 vs E5 vs LPG — energy content, economy differences and emissions per km.
UK Vehicle Tax (VED) Bands
CO2 emission bands, first year and standard rates, electric vehicle rates and diesel supplement.
Engine Oil Viscosity Grades
SAE grades from 0W-20 to 10W-60 — what the numbers mean, seasonal tips and common grades by car type.