By far, its most reliable four-pot would have to be the ZZ engine. Toyota ZZ Engine Family Engine 1ZZ 2ZZ 3ZZ 4ZZ Engine Layout 1.8-liter, NA I4 1.8-liter, NA I4 ...
The Exige — arguably one of Lotus's best cars — also boasted Toyota engines. The second series of the Exige, introduced in 2004, featured the standard 1.8-liter 2ZZ-GE engine from Toyota.