I'm unsure if the CLA uses the same 7-speed auto as the newer A and B class. If so the interval ( I'm told ) was changed from 5 years to 10 years, I'm unsure of the mileage interval. I would speak to MB or a trusted indy. We had Mrs Saff's 246 done last year at 5 years but the mileage was low.
Check it out. If the 'box's are different please excuse my ramblings.
I am sure that first oil change is at 100000km and second to be at 60000km.After changing the oil in my gearbox at 100000km as mercedes said...i can say that is to much