need to know how many miles inbetween services

should service all cars between 3 to 5000 like every three months,,, tune up once a year fuel filter once a yr

You should service your Xsara 2.0 vts every 12500 miles OR every year whichever come first.

Service every 12500 miles or 1 year.
This service includes:
Replace engine oil + filter
Check for play in Ball joints, bushes & bearings
Check sealing of gaiters
Check front & rear brake pad wear & disc condition
Check handbrake cables
Check brake pipes, power steering pipes
Check clutch cable & exhaust system
Check radiator & coolant pipes
Check levels of brake fluid, coolant, power steering fluid, washer water
Check wiper blades & all exterior lighting
Set tyre pressures
Lubricate locks, hinges & gear pivots

Every 37500 miles the service ALSO includes:
Replace air & fuel filters
Replace spark plugs
Check gear oil
Drain & refill coolant (every 5 years)
Replace & bleed brake fluid (every 2 years)

Every 75,000 miles the service ALSO includes:
Replace timing belt
Check tappits

At 15 years:
Replace pyrotechnic components (airbags & pretensioners)