Looking at the pic it looks closer to 1:144, a scale that for some reason is popular among toy car makes that make 'em smaller than HO.
It might be a toy (which could be any arbitrary size hovering around 1:144), or it might be made for British N scale, which is 1:148. Based on the photo, though, I'd say it was a toy, possibly larger than 1:144. One way to find out: measure the length of the model, and compare it to the published spec for the real car.