AUDI A4

兩者的分別為:

1.8T - 4氣缸的Turbo引擎,大約1800cc

2.4 - 6氣缸的NA引擎,大約2400cc

因為Turbo引擎,所以有部份1.8T的型號,馬力會調教得較2.4為大

1.8T is using I4 (straight 4) engine, while 2.4 is using V6 engine.
From the web site, you could find more detail information.
Look at the "Engines" table to compare the power of the two different
engines.
V6 engine is more powerful, but would consume more gasoline.

Hope this help.