I'll put the luggage in the boot.

我去把行李放进行李箱里。

《牛津词典》

What's more, the surprisingly large boot holds 450 litres of luggage, or two large suitcases.

更令人惊奇的是，汽车后备箱容量很大，足以盛下450升行李，或者是两个巨大的行李箱。

youdao

The entire luggage should be put in the boot unless if its hand luggage or the guest wants it otherwise.

如果客人没有特殊的要求，除手提包外，所有的行李应全部放入车后的行李箱内。

youdao

With just two seats and a tiny boot for luggage, the Smart is no good for young families or, indeed, for anybody with more than one friend.

ECONOMIST: DaimlerChrysler