mazda 6 54 plate

[lorrymax8]

engine management light stays on its been in mazda main dealers 4 or 5 times and £650 lighter in the pocket a few parts replaced but light came back on soon after but car still gos well with the light on.p...ed off with main dealers.look forward to any answers

[AlBags]

Not enough history and info to help with .. any answers will be so vague, they will hinder not help you.
What is exact history and conditions it first came on?
What codes is it throwing up?
Emission issue maybe? Has it two lambda sensors (post and pre) .. or one?
What's gas analysis like?

[buildersmate]

What did the dealer replace and why?
These EM system have a series of fault that can be interrogated after the event to find what sensor triggered the system to register the defect. So a repair organisation the the necessary diagnostics is really the best bet these days - which obviously the dealerships have.
Does the light reset when the engine is turned off, only to be triggered back on again during the next journey (not necessarily immediately)?

[AlBags]

MIL lights don't work like that .. none of them.