几辆红色的汽车英语可以说成 "several red cars"。
"Several" 是英语中表示 "几个" 的词，"red" 是表示 "红色" 的形容词，"cars" 是表示 "汽车" 的名词。
下面是几个使用 "several red cars" 的英文例句及其中文翻译：
I saw several red cars driving down the street. (我看到几辆红色的汽车在街上开过。)
There were several red cars parked in the lot. (停车场里有几辆红色的汽车。)
We passed several red cars on the highway. (我们在高速公路上超过了几辆红色的汽车。)