Is the wear and tear preventative maintenance costs on my vehicle going to increase significantly?

Some details:2Upper/2lower, (2)studios/(2)1bedeach lower has control of thermostat for both their unit and unit above themowner (me) pays heat, electric = tenantoffstreet parking, long driveway with 4 spaces for vehicles (ideally 1 spot per unit)I have snow removal company in place for snowfall over 2 inchesIssues I'd like to address:heat- how can I set guidelines for the lower tenants to keep it set at appropriate temp range (suggested ranges?)

@Debbi Oshier mobile homes in a park are considered vehicles and are taxed in a similar manner that vehicles are, primarily based on the age of the home.

The roommate has a scheduled surgery for a dislocated shoulder, I was told the boyfriend pushed the roommate out of a moving vehicle.

For example we did our own work converting the Duplex from junky backyard to a nice fenced (separate area per unit) to barefoot backyard, storage unit space, removing old 70's 6in concrete pad for vehicle parking, etc for a nice value add to renters).Some of what we're looking for in our first Texas real estate purchase & relocation (house hacking as we'll live in one of the 4 units) investment.

Does it seem too crazy to pay the mortgage off as well as provide an additional $10k to the seller so he can make a down payment on a new vehicle, and then work out a seller financed note that is favorable to both sides? 

@Dustin Stubbs - The only way that I'm aware of is to buy property in a solo 401k (self directed) tax vehicle.   

A few other things I put into leases:- no unregistered vehicles stored at the property - no displaying signs of any nature in the yard or any of the windows

Some examples:Increased wear-and-tear on the rentalIncreased number of vehicles and visitors, which upsets the neighborhoodIncreased likelihood of parties, noise, fire pits, and 4-wheelers jumping fire pits (ask me how I know)Tenants will have disputes and call you for resolutionIncreased lease violationsSomeone ends up leaving and the remaining tenants can't afford the rentHere's the reality.

Once that foundation is set, definitely look into the BRRRR book and the Multi-Family Millionaire to give you information on what vehicle you could pursue.Good luck to you on your journey!