Editing Locost (section)

==Haynes Roadster==
{{Main|Haynes Roadster}}

Ron Champion's original book was followed up with ''Build Your Own Sports Car: On a Budget'' ({{ISBN|1-84425-391-0}}) by [[Chris Gibbs]]. The subject car differs most significantly from the original in that it has an [[independent rear suspension]]. Additionally, the car was designed using [[computer-aided design|CAD software]], eliminating the measurement errors inherent to the original design. Other additions to the original Locost design include information for fabricating a rollbar and advice on using engines with [[fuel injection]].

The suggested donor car is a [[Ford Sierra]]. The book contains alternative suggestions for incorporating other donors including a [[BMW E36]], [[Mazda MX-5]] and also motorcycle engines.

Roadsters are becoming an increasingly popular choice over the Locost due to the more plentiful donors and the more advanced suspension. Approximately 10 (as of April 2010) cars have been completed and passed by their countries' governments for use on the road. In the UK this entails an [[Individual Vehicle Approval|IVA]] test and registration with the [[DVLA]].