The Saturn S-series is a family of compact cars from the Saturn automobile company of General Motors. Saturn pioneered the brand-wide "no-haggle" sales technique. The automobile platform, the Z-body, was developed entirely in-house at Saturn, and it shared very little with the rest of the General Motors model line. It implemented a spaceframe design, used on the Pontiac Fiero during the 1980s, with non-load-carrying side panels made of plastic instead of metal. These polymer panels were dent-resistant, something that remained a selling point for Saturn until just a few years before the Saturn brand was discontinued. The S series was marketed from the fall of 1990 for the 1991 model year through the end of the 2002 model year. Significant design updates were made in 1996, 1997, and 2000 for all cars. Although nearly every year of the S-series's existence brought some minor changes to the architecture of the car, each model kept the same basic body styling throughout its respective production period. History The S-series debuted for model year 1991 with the Sport Coupe (SC) and Sedan Level (SL) models. The SC was only available with the DOHC (Dual Overhead Cam) engine whereas the SLs had an option for the SOHC (Single Overhead Cam) engine (SL1) or the DOHC (SL2). For the 1993 model year, the SC gained an SOHC option (SC1) in addition to the existing DOHC option (SC2, renamed from SC). The SL & SC families were joined by the SW (Station Wagon) models, in both SW1 and SW2 flavors. The S series all used either the SOHC LK0/L24 or the DOHC LL0 version of the completely original, designed in-house Saturn 1.9L engine. SL1s, SC1s, and SW1s were only offered with the MP2 manual transmission and the MP6 automatic, while SL2, SC2 and SW2 models came with either the MP3 manual or MP7 automatic. The only difference in each case is the selection of gear ratios, with the SOHC-associated transmissions being geared taller for more efficiency, and the DOHC-associated transmissions having shorter, more closely spaced ratios for performance. As a result, it's not uncommon for enthusiast-owners to swap a tall-geared MP2 manual into a car equipped with a DOHC engine for better fuel economy on the highway. Aside from the engine and transmission, the level 2 models also included 15-inch instead of 14-inch wheels, a correspondingly larger tire size, EVO steering, a rear swaybar, the option of