The 12-Point Monthly Fleet Maintenance Checklist

These are the items that keep your vehicles legally on the road and structurally safe. Skip any of them and you're one inspection or one accident away from a very expensive bad day.

1. Tyre pressure and tread depth. Check cold pressures against the door-jamb spec, not the sidewall max. Measure tread with a gauge, not a coin — corporate clients increasingly ask for tread records as part of duty-of-care audits. Replace at 4/32" for highway-heavy fleets, not the legal 2/32".
2. Brake feel and pad thickness. A driver's "feels fine" is not a brake inspection. Pull the wheels quarterly and measure pad and rotor thickness directly. Document the numbers.
3. Fluid levels and condition. Engine oil, transmission fluid, coolant, brake fluid, washer fluid, power steering. Check levels monthly; check colour and smell quarterly. Dark transmission fluid is a $4,000 problem caught early or a $12,000 problem caught late.
4. Battery health. Load-test every battery monthly in the cold months. Black-car batteries die from short-trip duty cycles long before their calendar age would suggest.
5. Lights and signals. Walk every vehicle and tick off headlights (high and low), fog lights, brake lights, reverse lights, indicators, hazards, and interior reading lights. A burnt-out brake light is the easiest reason for a state trooper to pull over a chauffeured run.
6. Wipers and washer jets. Replace wipers every six months regardless of how they look. A juddering wiper on a rainy airport run is a remembered experience for the client.
7. Documented test drive. Every vehicle gets a 15-minute test drive monthly by someone who isn't its primary driver. Listen for new noises, feel for new vibrations, watch for new dashboard lights. Fresh ears catch problems that primary drivers have unconsciously normalised.

These are the items that decide whether the client books you again. Mechanical perfection doesn't matter if the cabin smells like the last passenger's lunch.

1. Exterior detail. Full hand wash, clay-bar treatment quarterly, paint sealant every six months. Pay particular attention to the door sills — they're the first thing a client sees and the last thing they touch.
2. Interior steam clean. Monthly steam clean of all upholstery and carpets. Steam kills odours that vacuuming and spraying merely mask. Pay attention to the headliner above the rear seats — it absorbs cologne, perfume, and food smells more than you'd think.
3. Partition and glass. Streak-free interior glass, especially the partition if you run stretches. Use a dedicated automotive glass cleaner, not household Windex, which leaves residue that fogs in humidity.
4. Amenity stock. Bottled water, mints, tissues, phone chargers (USB-C and Lightning), umbrellas, and a small first-aid kit. Restock to a defined par level on every check, not "when it looks low."
5. License, insurance, and permit expiry. Registration, livery permit, airport access permit, insurance certificate, driver's medical card. All expiry dates tracked in software with 60-, 30-, and 7-day warnings. An expired airport permit on a Monday morning is a week of lost revenue.

Every check above should produce a row in your fleet management database with the date, the inspector's name, the vehicle, the result, and any follow-up action. Three reasons:

• Insurance. When you have a claim, the carrier will ask for maintenance records. Operators with documented monthly inspections settle claims 30–50% faster than those who can't produce records.
• Corporate procurement. Enterprise accounts increasingly require duty-of-care documentation. A clean monthly inspection log is often the difference between winning and losing an RFP.
• Resale value. A documented service history adds $3,000–$8,000 to the resale price of a 4-year-old executive sedan, and it makes the vehicle sell in days instead of months.

The mechanical seven should be done by a qualified mechanic — either in-house if you're large enough, or at a contracted shop. The presentation five can be done by a senior driver or detailer, but the checklist should be a printed or digital form they sign, not a verbal "yeah it's good."

The trap to avoid is letting drivers self-certify their own vehicle. Drivers normalise problems on cars they drive every day. Always have a second set of eyes.

Fleet operations live or die on the daily standard you can actually enforce. Kymark gives you the maintenance log, vehicle status, and driver assignment views you need to keep that standard real. See the features, check pricing, or start your free 14-day trial and lock in a GNet users discount — 10% off any plan, for life — limited time offer valid until the deadline shown in the offer countdown — load your real fleet into the app in minutes.

Related reading: 12-Point Monthly Fleet Maintenance Checklist · Managing Multiple Vehicles & Drivers.