# Kei

CEFR C2 · Adjective

Source: https://englishreference.com/word/kei
Updated: 2026-08-15

## Definition

describing a very small car from Japan that must follow strict rules about its size and engine power. These cars are popular because they are easy to park and cheaper to own.

For teachers: pertaining to a specific category of Japanese small vehicle subject to statutory limits on dimensions and engine displacement. Often used in the compound 'kei car' to describe vehicles that qualify for tax and insurance benefits in Japan.

## Examples

- He drives a tiny kei car to work every day.
- Because parking space is limited in Tokyo, many residents prefer a kei car for its compact size and efficiency.
- The manufacturer expanded its lineup to include a kei truck, catering to rural businesses that require nimble transport through narrow mountain roads where larger vehicles cannot pass.

## Usage notes

- Typically functions as an attributive modifier, almost exclusively appearing before 'car', 'truck', or 'van'.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.