Commonly fitted with Mercedes-Benz OM904LA or Cummins ISBe engines. Transmission: Usually an Allison 2100 Series automatic. Braking System: Full air disc brakes (often Knorr-Bremse).
Workshop manual – Optare Solo (all variants) optare solo workshop manual
Optare Solo workshop manual identifies its Solid State Multiplexing system as a core technical feature. This system utilizes Pulse Width Modulation (PWM) Commonly fitted with Mercedes-Benz OM904LA or Cummins ISBe
For a more personal look at the Optare Solo's operational history, the blog by Mark Fitchew offers a nostalgic and detailed account. optare solo workshop manual