Sinclair C5 major consumer organisations published sceptical evaluations. The Automobile Association questioned many of Sinclair's claims in a report published at the start of May. It found that the range of the vehicle was typically only about 10 miles (16 km) rather than the promised by Sinclair, and reported that the C5's battery ran flat after only on a cold day. The C5's running speed was more usually around than the claimed , while its running costs compared unfavourably to that of a petrol-driven Honda PX50 moped. The stability, general roadworthiness, and especially the safety of the C5 were questioned, and the
Sinclair Zike public. The price (mail order) was £499, comparable with a top of the range tourer or mountain bike at that time. The initial production target was 10,000 Zikes a month. In May 1993 press reports stated that Tudor Webasto had terminated production because of low sales and that Sinclair was seeking a new manufacturer. In the end only around 2,000 units were sold. Sinclair himself moved on to the development of the Sinclair ZETA (Zero Emission Transport Accessory)—a detachable powerpack intended to sit on the wheel of any bicycle to help power it along. Sinclair put the failure of the