Top 15 Open-Source Car AI Projects: Voice Assistants, Diagnostics & Smart Driving Tools (2026)

At Medevel.com, we’re all about open-source innovation, especially when it’s making our cars smarter, safer, and more human-centered.

Whether you’re a developer tinkering with AI, a mechanic building tools for the road, or just someone who loves the idea of a car that understands you, this is your corner of the web.

We’ve put together a curated list of some of the most exciting, open-source automotive projects out there, from voice assistants and driver aids to smart maintenance systems and even AI that learns how you drive.

These aren’t just cool demos; they’re real tools built by passionate people who believe in transparency, privacy, and purposeful tech.

From openpilot upgrading your driving experience to CarBuddy keeping your car in top shape, Guardian-Angel watching your back, and VoxAI making your ride feel like a co-pilot, these projects are proof that the future of driving is open, collaborative, and full of heart.

So dive in, explore, fork, contribute, and let’s build the next generation of intelligent, ethical, and joyful car technology, together.

Because at Medevel.com, we don’t just follow trends, we help create them.

Here is our picks.

1- openpilot

openpilot is an open-source driver assistance system that turns your car into a smarter, safer, and more relaxed driving experience.

It’s like giving your car a brain upgrade, using advanced software to handle things like:

• Adaptive Cruise Control (automatically speeds up and slows down)
• Lane Centering (keeps you in the middle of the lane)
• Lane Changes (with safety checks)
• Driver Monitoring (makes sure you’re paying attention — no annoying wheel nudges!)

It works on 275+ car models from brands like Toyota, Honda, Hyundai, and more.

2- FIAT (uconnect) Home Assistant Addon 🚗

3- KITT

KITT is an open-source, conversational voice assistant designed for vehicles, offering intelligent help with navigation, points of interest, weather, and real-time traffic. It features a customizable speech synthesizer and a user-friendly GUI that lets users simulate different driving scenarios, adjusting time, location, origin, and destination, to test and refine interactions.

It is is originally built for experimentation and innovation, KITT was showcased at the 2024 IEEE Vehicular Networking Conference and is freely available on GitHub.

4- In-vehicle AI-driven Digital Voice Assistant

This project builds a smart, open-source voice assistant for cars that understands your commands, no more shouting or guessing.

It uses Vosk for speech-to-text, a lightweight LLM for context, SVM for accurate command classification, and Platt scaling to know when it doesn’t understand, so it never guesses wrong.

Here’s the magic under the hood:

• Speech-to-Text with Vosk: Turns your spoken words into text, fast, private, and runs locally (no cloud needed).
• Lightweight LLM: A tiny but smart language model that understands context, like knowing “turn on the AC” means climate control, not lights.
• SVM Text Classification: Accurately categorizes commands, whether it’s “open the window,” “connect Bluetooth,” or “adjust steering wheel.”
• Smart Out-of-Distribution Detection: Uses Platt scaling to know when it doesn’t understand you, so it never guesses wrong. No more “I don’t know” confusion, just clarity.

5- Automotive AI: Voice Activated Vehicle Diagnostic Assistant

Automotive-AI is a free and open-source smart, voice-powered assistant built specifically for auto technicians and mobile service pros. It lets you manage your day-to-day operations hands-free, so you can focus on fixing cars instead of fumbling with phones or tablets.

6- VIA-AI : Open Source Driver Assistance System

VIA-AI is an open source driver assistance app, supports Adaptive Cruise Control (ACC), Lane Keeping Assist System (LKAS), and CAN Bus integration functions.

It enables the development of driver assistance capabilities for selected vehicles using a modern Android smartphone and hardware connectors.

7- Smart Car Assistant

DriveSense is an open-source smart car assistant that blends conversational AI with real-time video intelligence to create a truly interactive driving experience.

At its core, it uses powerful language models like Llama-3.1 and Hugging Face’s pre-trained models via LangChain to understand and respond to natural language commands.

8- CarBuddy – AI-Powered Car Maintenance Assistant

CarBuddy is an AI-powered web app that helps car owners stay on top of maintenance with personalized reminders and tips. It is built with React and Material-UI, it offers a clean, responsive interface for tracking oil changes, tire rotations, and more.

CarBuddy’s features includes:

• Add & manage multiple cars in your virtual garage
• Enter VIN & mileage, auto-organizes everything
• AI Chatbot: Ask questions, upload photos, get instant car advice
• Track oil changes, tire rotations, brake checks & more
• Smart reminders based on time or mileage
• Clean, simple dashboard to see what’s due and what’s done

9- Autonomous Driving Assistant

This Turkish Language AI assistant uses Google Speech-to-Text and Text-to-Speech with a custom NLP model to understand voice commands, all powered by ROS2 and simulated in Webots.

It also features a KNN-based system to autonomously navigate out of tight parallel parking spots.

10- CarSoul-AI

Open-source project Guardian-Angel is a smart driving assistant that fuses sensor data from accelerometers and cameras to detect collisions, using YOLOv4 and multi-sensor fusion for high accuracy.

It delivers personalized experiences via cloud-based AI, including location-aware music recommendations, adaptive volume control based on cognitive load, automated voicemail, and a real-time driving score with fuel budgeting insights.

12- GenAI-Powered In-Car Voice Assistant

This demo showcases a next-generation, free and open-source in-car voice assistant powered by Generative AI and MongoDB Atlas.

It transforms the driving experience by moving beyond basic commands to deliver intelligent, context-aware interactions that understand driver intent, analyze real-time vehicle data, and offer personalized recommendations, turning your car into a smart, responsive co-pilot.

Its features include:

• Generative AI Intelligence: Uses large language models (LLMs) to understand natural language and provide dynamic, conversational responses, not just fixed commands.
• Context-Aware Interactions: Remembers past conversations, understands driving context (e.g., traffic, location, time), and adapts accordingly.
• Real-Time Vehicle Diagnostics: Pulls live data from your car (via OBD2 or APIs) to explain issues like “Check engine light” with clear, human-like explanations.
• Personalized Recommendations: Suggests optimal routes, nearby charging stations (for EVs), rest stops, or even coffee shops based on mood, schedule, and driving habits.
• Cloud & Local Integration: Built with MongoDB Atlas for scalable data storage and AI model management, while supporting offline functionality for privacy and reliability.
• Smart Memory & Learning: Learns user preferences over time, favorite destinations, music, climate settings, and auto-applies them.
• Open Source & Free: Fully open-source, transparent, and free to use, modify, and extend, no subscriptions, no hidden fees.
• Privacy-Focused Design: Data can be stored locally or securely in the cloud, giving users full control over what’s shared.

13- VoxAI – Your AI Car Assistant

VoxAI is a smart, voice-powered interface designed to keep you focused on the road. With simple voice commands, you can effortlessly manage calls, play music, adjust climate settings, and more, all without touching your phone or dashboard.

It is built with Volkswagen’s vision in mind, VoxAI delivers a seamless, intuitive, and driver-first experience that’s as sustainable as it is intelligent.

VoxAI’s features include:

• Seamless Voice Interaction: Effortlessly make and receive calls hands-free.
• Music Playback: Stream your favorite music without distractions.
• Other Controls: Manage climate settings and other in-car features with voice commands.

14- In-Car AI Agents

In-Car AI Agents is an innovative project aimed at enhancing the driving experience through intelligent voice-controlled assistants. These agents can assist drivers with navigation, entertainment, vehicle diagnostics, and more, all while ensuring safety and convenience.

In-Car AI Agents app comes with the following features:

• Voice Recognition: Responds to natural language commands for hands-free operation.
• Navigation Assistance: Provides real-time traffic updates and route suggestions.
• Entertainment Control: Allows users to manage music, podcasts, and audiobooks.
• Vehicle Diagnostics: Monitors and reports vehicle status and health.
• Personalization: Learns user preferences for a customized experience.

15- Guardian-Angel

Guardian-Angel is an open-source in-car safety and wellness system designed to enhance driver awareness, reduce cognitive load, and create a personalized, adaptive driving experience.

It uses multi-sensor fusion (accelerometer + camera with YOLOv4) for accurate collision detection, real-time location-aware music recommendations via collaborative filtering, and context-sensitive volume control based on driving behavior.

The system streams data every 3 seconds to the cloud, where a fuzzy logic-driven “Driving Score” assesses safety, informs fuel budgeting, and enables automated voicemail, all while keeping drivers focused and in control.