VAT is included in the valuations for cars, motorcycles and HGVs. For LCVs, VAT is included if the vehicle is a VAT Qualifying Commercial vehicle as defined by HMRC. Otherwise Commercial vehicle valuations are supplied excluding VAT.
You can choose to exclude VAT from your valuations by ticking the preference in Settings > Adjustments.
For details of the HMRC definition of a VAT Qualifying commercial vehicle, please visit their website