The Lotus 109 was a Formula One car used by Team Lotus in the latter part of the 1994 Formula One season. It was designed by Chris Murphy who based the car on his Lotus 107 model. The car featured sculptured sidepods, a shorter wheelbase, and a lower centre of gravity than its predecessor, whilst Mugen developed the engine to be lighter and higher-revving than the previous spec engine issued to the team. It was powered by a Mugen-Honda V10. Johnny Herbert was able to keep Lotus competitive in Belgium and Monza with the car, but the funds were drying up and development was limited. At the end of the season, the car was retired and Team Lotus went into receivership.