intended for light commercial use. This variant featured a fold-down rear bench seat without seat belts. The "S" series, intended for private use, is largely similar, but the larger, more comfortable rear seats are equipped with belts and are further to the rear of the vehicle with more leg room. While the seats still fold down, unlike the "V", the "S" does not offer a flat loading floor. These characteristics are due to Japanese tax preferences for commercial vehicles, which only allow for temporary accommodation in the rear and demand a flat loading floor. The top-of-the-line, turbocharged TR-XX model was available both as a passenger car version and as a van, with slightly higher equipment levels for the passenger version, which was fitted with a fuel-injected, 12-valve, turbocharged, and intercooled engine (EF-JL) producing . The TR-XX van, meanwhile, had less stringent emissions requirements and received a carburetted, six-valve version of the same intercooled turbo engine (EF-XL), producing without the passenger version's three-way catalyst. The range received a very subtle facelift of a more rounded overall appearance for 1993; it included altered front and rear lights, bumpers, and a new bonnet and front seats. This version was available to Japanese customers from August 1992, and also incorporated some changes to the lineup. Turbocharged automatics now received a four-speed transmission. Shortly thereafter, the new RV-4 model appeared. This version, with its crossover pretensions, latched onto the wave of so-called "RVs" (recreational vehicles) that became popular in Japan in the early 1990s. The RV-4 received distinct cladding, somewhat raised suspension, a roofrack and bullbar, as well as a protective plate for the engine. The Mira could either be equipped with a three-speed automatic, or four- or five-speed manual transmission. A part-time four-wheel drive variant known as the L210 was also available in V or S models, only with the five-speed manual. Also, a version with mechanical four-wheel steering (the L220), so far was the only kei car to feature this option. In November 1990, a version with all-wheel drive (permanent four-wheel drive) appeared, called the X-4. This had the same fuel-injected, turbocharged engine as the front-wheel drive-only TR-XX, and shared much of that car's equipment. Sales targets were about 700 cars per month for this version. Along with the August 1992 facelift, the X-4 was incorporated into the TR-XX series, while the TR-XX van was discontinued, reflecting changing tax conditions. The TR-XX's electronically