The most common and most likely answer to this crossword clue is the 3 letter word BUS
I've seen this crossword clue in The Times
B
U
S
More clues leading to the result BUS
- Public transport not quite working
- Vehicle has creepy-crawlies — not good!
- Not entirely bankrupt transporter
- Coach player wanting change? Not half
- Carry vessel upside down
- Public transport is mostly out of action?
- Transport is mostly broken
- Second-class American form of transport
- Vehicle has problem with no engineers available
- It has gears not fully engaged
Buddy explains!

The straight part
We know that "Vehicle" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case vehicle = bus.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does BUS mean?
BUS noun- A motor vehicle for transporting large numbers of people along roads.
- An electrical conductor or interface serving as a common connection for two or more circuits or components.
- (medical industry) An ambulance.
- To transport via a motor bus.
- To transport students to school, often to a more distant school for the purposes of achieving racial integration.
- To travel by bus.
- (food service) To clear meal remains from.
- (food service) To work at clearing the remains of meals from tables or counters; to work as a busboy.