Cars & travel

Tire sizes, driving side, fuel octane, license-plate codes and EV connectors.

• Child car seat rules by country Child car seat rules by country: rear-facing limits and booster/height rules for the US, UK, Germany, Sweden, France, Australia and Japan.
• Which side of the road each country drives on Left-driving and right-driving countries for rentals and road trips — the UK, Japan, Australia, India and Thailand drive left.
• EV charging connector types EV charging connectors compared — Type 2 in Europe, CCS1/CCS2, NACS/Tesla in North America, CHAdeMO and GB/T: speeds, regions and which cars use them.
• License Plate Formats by Country (EU Band Guide) Reference table of car license plate layouts by country: typical letter and number formats plus which nations display the blue EU identification band.
• Motor oil viscosity grades explained SAE oil viscosity explained: the W (winter) cold-pumping number and hot grade, with typical uses for 0W-20, 5W-30 and 10W-40.
• Tire size codes explained (205/55R16) Decode any tire sidewall like 205/55R16: section width, aspect ratio, construction, rim diameter, load index and speed rating — with a worked example.
• International vehicle registration codes Oval country sticker codes on cars: D Germany, F France, GB United Kingdom, J Japan — an A–Z list for road trips and imports.