Definitions by Kei
MR2
Automobile produced by Toyota between the years of 1984 to present. Though it underwent several iterations of body styles, the focus has always been on the mid-engine, 2-door configuration (hence the name). Different models include the AW11 (1984-1989), and the SW20 (1989-1999). The latest model is refered to as the Toyota MR-S.
SW20
Second generation of Toyota's popular MR2 series, with production years between 1989-1999 in Japan. This car features a Mid-Engine, Rear-Wheel drivetrain, providing excellent weight balance and handling. In the JDM (Japanese Domestic Market), the SW20 MR2 shipped with either the naturally aspirated 2.0L 3S-GE engine, or a turbocharged 2.0L 3S-GTE. In the states, the car shipped with a 2.2L 5S-FE NA engine, or the 3S-GTE.
AW11
First generation of Toyota's popular MR2 automobiles, produced from 1984-1989 in Japan. Sporting a Mid-Engine, Rear-Wheel (MR) drivetrain, this car is rumored to be an abandoned Lotus project picked up by Toyota. This car came standard with either a naturally aspirated 1.6L 4A-GE engine, or a supercharged 4A-GZE (same displacement). Precursor to the SW20 MR2.
180SX
Automobile released in the JDM (Japanese Domestic Market) by Nissan, produced between 1989 and 1999 due to populatity. Based on the Silvia S13 chassis, this car was re-released with a fastback and retractable headlights, as well as a restyled body. Initially, the car released with a 1.8L turbocharged CA18DET engine, but was later replaced with the well-known SR20DET 2.0L turbocharged engine. Major features of the car include it's rear-wheel drivetrain, excellent curb weight and near perfect weight distribution. This car was released as the 240SX in the USDM after recieving a larger (normally aspirated) engine. Popular modifications include the Sil80 mod (Silvia S13 frontend, 180SX backend) and the OneVia (vice versa.)