Scale is a ratio, not a guarantee of identical dimensions across products. A 1:10 monster truck and a 1:10 crawler can differ substantially in wheelbase, tire diameter and overall width.
Common scale bands
1:10 is a major hobby scale with broad parts ecosystems. 1:14 and 1:16 offer smaller footprints while retaining meaningful outdoor capability in many models. 1:18 and 1:24 are popular for compact vehicles and indoor or technical crawling.
Always check dimensions
Use scale for category context, then compare actual length, width, height and weight. Storage, transport and driving space depend on real dimensions.