Total Fleet Health Management
The only full-stack, AI-based solution that predicts vehicle failures before they happen. Building on 15+ years of telematics and fleet diagnostic expertise, trusted by OEMs, Tier-1 suppliers, and enterprise fleet operators managing over 350,000 vehicles worldwide.
The Industry Challenge
Commercial fleets lose millions annually due to unplanned breakdowns. The industry needs AI that predicts failures before they occur.
Five-Layer AI Architecture
The only deep-tech AI company built for Fleet Health, covering all layers end-to-end.
Data Ingestion
J1939, CANbus, OBD-II, telematics APIs - we ingest data from any source.
Works with existing telematics like Geotab or Questar hardware for deeper data access.
Foundation Model
Patent-pending GPT for sensors that learns vehicle behavior from raw data.
Foundation model that learns vehicle behavior from raw sensor streams.
Health Scoring
Adaptive anomaly detection per system, per vehicle for precise insights.
Monitors 100+ vehicle systems including engine, transmission, brakes, and more.
AI Intelligence
LLM pipelines deliver natural language insights you can act on immediately.
Clear answers: what to fix, when, and why it matters.
Agentic Actions
Autonomous chat agent with deep research capabilities for fleet data.
System keeps learning and improving recommendations over time.
Patent-Pending IP
Foundation model that learns vehicle behavior from raw sensor streams.
Hardware Flexible
Works over existing telematics (e.g., Geotab) or with Questar's hardware for deeper data.
Breadth of Capabilities
The only company covering all five layers of AI end-to-end.
Questar Helps You Meet the KPIs That Matter Most
Availability, efficiency, and cost control.
Higher Uptime
Catch failures before they strand a vehicle. Questar flags the risk of getting worse—so you fix early, keep availability, and cut roadside breakdowns.
Predictable Costs
Bundle predicted repairs with scheduled PM to lower cost per service event. Your customers see stable maintenance spend—not emergency invoices.
Faster Repairs
Know what's wrong before the vehicle arrives. Right parts, right technician, first-time fix—and data to back up every SLA report.
Better Fuel Efficiency
Healthier vehicles mean better fuel efficiency and lower emissions. Track deterioration trends to extend asset life.
Works with All Types of Vehicles and Equipment
Our solution is designed to be compatible with all types of vehicles and motorized equipment, including trucks, agricultural vehicles, tractors, excavators, construction machinery, and other specialized equipment. It can also be adapted to motorized equipment used in sugarcane farming and harvesting operations.
This versatility makes it possible to provide a reliable and suitable solution across a wide range of machinery, regardless of its type, application, or working environment.
Commercial Trucks
Long-haul and regional freight
Buses & Public Transit
Urban and intercity transportation
Agricultural Vehicles
Farming and harvesting equipment
Construction Machinery
Heavy equipment and excavators
Industrial Equipment
Manufacturing and logistics
Specialized Equipment
Custom and niche applications
Holistic Vehicle Health Monitoring
Questar monitors 100+ vehicle systems to provide complete visibility into fleet health.
Questar Across All Operations
The Operations Manager View
Full Fleet Visibility. Better Availability. Smarter Decisions.
What you can do
- See your entire fleet at a glance
- Drill down by location, group, or model
- Get a ready-made priority list
Why it matters
- More uptime - buses stay on routes
- Fewer surprises - catch problems 2-4 weeks early
- Smarter planning based on actual condition
The Maintenance Manager View
Fewer Breakdowns. Faster Repairs. Lower Maintenance Costs.
What you can do
- Focus on the right vehicles first
- Know exactly what to fix and why
- Spot patterns across the fleet
Why it matters
- Fewer breakdowns - catch small issues early
- Faster repairs - technicians know what to expect
- Lower maintenance costs - prevent expensive failures
The Finance Manager View
Lower Costs. Clearer ROI. Smarter Fleet Investment.
What you can do
- See the cost of waiting
- Protect asset value over time
- Connect maintenance to financial outcomes
Why it matters
- Lower total maintenance costs
- Fewer emergency expenses
- Better fuel and sustainability performance
ROI & Customer Success
Engine Recall Prevention
Collaboration between Questar and local importer identified engine breakdown trends and parts shortage. Early detection of low oil pressure indicating oil pump malfunction.
Public Transportation Company
Case study with 1,100 buses monitoring 4 families of key failures: Engine heat, Oil pressure, Coolant, Urea. End-of-day process improvement based on Questar recommendations.
Leasing & Operator Customer
Leasing company of ~5,000 commercial vehicles (Trucks & Buses) providing maintenance services under service contracts to leading enterprise fleets.
What Customers & Partners Are Saying
"Traditional fleet management tools stop short of proactive vehicle health optimization. With Questar's predictive capabilities, we can go beyond and deliver the first large scale integration of fleet management with predictive vehicle health in a unified solution across our multi-brand, global customer base."
Jan-Maarten De Vries
CEO
Bridgestone Mobility Solutions
"Questar has significantly contributed to optimizing our operations and reinforcing our commitment to provide safe and reliable transportation."
Ronen Wolff
VP Maintenance, Logistics & Safety
Kavim Public Transportation Ltd
"Questar's real-time edge data with Fleetguard's industry-leading filtration solutions, shifts reactive to proactive decision-making, enabling smarter, faster and more confident choices."
Matthew Ferguson
Fleetguard FIT Global Product Manager
Atmus Filtration Technologies
Ready to Transform Your Fleet Operations?
Join the 350,000+ vehicles already benefiting from predictive maintenance. See how Questar can save you $5,600 per vehicle annually.