This article carries forward the topic of an earlier Zenride post with a clearer description of the available evidence.
The former site described independent Bosch validation and major fuel and CO₂ savings. The Bosch-labelled PDFs currently available in the archive show historical exhaust inspections performed with Bosch equipment. Passed inspections alone do not verify a particular fuel saving or independent validation of the Optimizer.
The archive also includes a separate Peugeot 308 report and other material. Review the vehicle, method and conditions of each document separately.
Topic from the earlier post.