Spreadsheets work for one or two vehicles but break down at five and are broken completely by ten: no alerts when a service is due, no mileage tracking without someone entering it, no per-vehicle cost visibility, and no reliable history on demand for an insurance adjuster. Industry data shows small fleet operators see 35-45% higher annual maintenance costs when maintenance is reactive instead of proactive. For a 10-vehicle fleet: ServiceSage Auto Team costs $39/month flat (about $2.60-$7.80 per vehicle up to 15), no GPS hardware or contracts, setup under 10 minutes. Fleetio runs $4-$10 per vehicle per month ($40-$100/month for 10 trucks) with no hardware but days-to-weeks setup. Samsara is GPS/telematics-first, custom-priced at an estimated $27-$45 per vehicle per month plus hardware and multi-year contracts. Simply Fleet runs $2/vehicle/month for bare-bones tracking.
Signs it is time: finding out a vehicle is overdue when a driver complains, records living in an unupdated notebook or spreadsheet, a preventable breakdown this year, being unable to quickly answer when a specific truck's last oil change was, climbing repair bills with no clear source, or 5+ vehicles with no single status view. The cost of a missed oil change is about $60; a blown engine from deferred maintenance is $4,500 or more. Verdict: 1-4 vehicles, a spreadsheet or free tier is fine; 5-15 vehicles needing simple tracking and alerts, ServiceSage Auto Team fits; 15+ vehicles needing work orders and parts inventory, Fleetio; needing real-time GPS and AI dash cams, Samsara.