QUOTE(Steve ( West Mids ) @ Jan 30 2008, 07:24 PM)

I'd take it back to them ;) Why do you think they only replaced 5 plugs and not 6? Did they do anything other than service? Could be lambda sensor.
when i went to collect the car, the technician (ha thats a joke) told me that they had made a mistake when ordering the plugs. he said they had ordered 4 instead of 5.
i said , 'dont you mean 6'.
he said 'no, theres only 5 plugs, its a 5 cylinder car'.
bollocks i thought. but did not query it further.
when i got home i phoned lexus and asked if there where any 5 cylinder variations for the is200. Ok course there arnt.
just to be sure, i removed the air filter cover and hey presto, 6 spark plugs and coils. clear as day.
i'm going straight back to the garage tomorrow morning.
how the hell can they mistake a 6 cylinder engine for a 5 cylinder engine. bunch of chancers