boot

BMWの3シリーズにはSedanとTouringの2種類がありますが，ここに新たにGTが仲間入りします。GTの特徴の1つに収納量豊富なトランクがありますが，この「トランク」はイギリス英語でbootが用いられます。辞書でbootを調べると「｟英国用法｠（車の）トランク」とありました（『プログレッシブ英和中辞典』小学館）。アメリカ英語のtrunkと合わせて押さえておきましょう。（Koyamamoto）

BMW 3 Series GT
The BMW 3 Series Gran Turismo has been officially revealed ahead of its public debut at the Geneva Motor Show. The 3 GT becomes the third member of the BMW 3 Series range, following the latest BMW 3 Series saloon and Touring estate models.
… All BMW 3 Series GTs come with an electronically opening tailgate, a two-piece parcel shelves that can be stored under the boot floor, and 40/20/40 split folding rear seats.
The 3 GT has a 520-litre boot – bigger than the 3 Series Touring by 25 litres – that can be expanded to 1,600 litres in its largest load-carrying configuration, although the car doesn’t have any space to carry a spare wheel.
http://www.autoexpress.co.uk/bmw/3-series/62657/bmw-3-series-gt