Is the MG Majestor expensive to maintain?

The MG Majestor costs more to maintain than a mass-market SUV, as it is a premium full-size SUV.
Scheduled servicing is recommended every 10,000 km or 1 year, whichever comes first. You can expect:

Minor service: Around Rs. 8,000-10,000

Major service: Around Rs. 14,000-18,000

Do keep in mind that these costs are indicative and actual costs may vary depending on your location and service requirements.