H4 or L4
 

Hi all, I'm trying to compare my cars fuel consumption to other similar cars registered on this site. Only problem is there is reference to H4 and L4 diesel engines... What does this mean ? thanks, Mark

Here's the relevant FAQ: What do the engine type abbreviations such as L4 and V6 mean?

In your case you chose H4 when you created the vehicle. Not sure why offhand, maybe someone else had chosen that before you by mistake. Pretty sure the Vectra has a standard 4-cylinder engine.

Keep in mind that people can choose to say their car has any type of engine in our system and they don't always get it right.