CARALGO
Device · Certified Retrofit

CarAlgo — The intelligence missing from your car

CarAlgo is your car's connected co-pilot, designed by French engineers. Installed once, it watches over your car continuously — silently, in the background — and warns you before things go wrong.

RED CE certified · e-Mark iOS & Android Always connected
CarAlgo dongle and mobile app, made in France
The problem

Your car generates thousands of data points.CarAlgo turns them into useful information for you.

Anticipate breakdowns, control your spending and drive with peace of mind.

CriteriaWith CarAlgoWithout CarAlgo
Vehicle monitoring
✓ Your car is monitored automatically, 24/7
— You have to think of everything yourself
Breakdown prevention
✓ Early alerts before a breakdown happens
Excessive fuel use, battery, engine faults…
— Faults are only discovered when it's already too late
Diagnostics
✓ Diagnostic check every time you start the car
For each fault: explanation, causes, repair advice
DTC fault code clearing
— Fault codes that are hard to understand
Maintenance
✓ Digital maintenance log with automatic reminders
— Paper logbook, easy to forget
Dashboard
✓ All your car's usage data in the app
Fuel, battery, mileage, range, next maintenance…
— Limited to what's on the odometer
Trips
✓ Full history of every trip, split by
Personal / Business
— No history
Fuel consumption
✓ Consumption analysis and eco-driving tips
— No way to analyse your spending
Safety
✓ Engine, battery, maintenance, inspection and accident alerts
— No monitoring at all
Eco-driving
✓ Driving score, lower fuel use and CO₂ emissions
— No advice at all
Location
✓ GPS position and last known location
— Hard to find your car when you need to
Privacy
✓ Private mode, switchable anytime
— N/A
Installation
✓ Under 2 minutes to install, connects automatically
— N/A
Quality
✓ French-made, certified, evolving and regularly updated
— N/A
How it works

Plug it in once, then forget about it.

Plug in01

Plug in

The dongle into your car's OBD-II port. Just once.

Connect02

Connect

Your car in the CarAlgo app, on iOS or Android, in minutes.

Forget it03

Forget it

The dongle stays plugged in and reconnects on its own, silently, on every trip.

At your fingertips

All the useful information about your car, in your smartphone.

True odometer

128,430 km

Fuel level

39.2 L

12V battery

13.6 V

EV battery

65 %

Range

436 km

Average consumption

6.4 L/100km

Engine fault diagnostics

Explanation, causes and repair advice

Next maintenance

1 month and 26 days

Trip history

Distance · duration · consumption

Road type

Urban, Mixed or Motorway

Mixed

Driving score

Acceleration, braking, cornering

87 / 100

Eco-driving score

Less pollution, less CO₂

92 / 100

Refuelling tracking

Automatic refuelling detection

Maintenance notifications

Service visits, MOT/inspection…

Real-time view

Live engine data

Phone call assistance

Breakdown, towing, assistance, insurance, garage

Find your car

GPS position of last known location

True odometer

128,430 km

Fuel level

39.2 L

12V battery

13.6 V

EV battery

65 %

Range

436 km

Average consumption

6.4 L/100km

Engine fault diagnostics

Explanation, causes and repair advice

Next maintenance

1 month and 26 days

Trip history

Distance · duration · consumption

Road type

Urban, Mixed or Motorway

Mixed

Driving score

Acceleration, braking, cornering

87 / 100

Eco-driving score

Less pollution, less CO₂

92 / 100

Refuelling tracking

Automatic refuelling detection

Maintenance notifications

Service visits, MOT/inspection…

Real-time view

Live engine data

Phone call assistance

Breakdown, towing, assistance, insurance, garage

Find your car

GPS position of last known location

Before CarAlgo, an employee buried in expense paperwork; with CarAlgo, a professional shows her certified mileage report on her smartphone
Professional use

Using your car for work?

CarAlgo automatically detects your business trips and generates a certified mileage expense report, ready to send to your employer or accountant. No more calculations, no more forgetting, no more spreadsheets.

Your mileage expenses in one click

  • Detailed trips
  • Mileage calculated automatically
  • Personal / business distinction
  • Date, time and distance of every trip
  • Destination address
  • CarAlgo-certified PDF document

Built for sales reps, consultants, technicians, self-employed nurses, tradespeople, freelancers and small business owners.

0 minutes of manual entry — real time saved every month.

Download a sample report
Parental tracking

Support their first miles with complete peace of mind.

Has your child just passed their driving test? Stay connected to their car, even when they hit the road alone.

With CarAlgo, you get useful information about the car and how it's used, right on your smartphone. The goal isn't to spy, but to support those first months of driving and encourage good habits behind the wheel.

With CarAlgo, you can:

  • See where the car is
  • Check the trips taken
  • Track mileage and vehicle use
  • View the driving and EcoDrive scores
  • Track fuel consumption
  • Receive vehicle alerts
  • Be told about an engine fault or anomaly
  • Detect a low battery
  • Plan maintenance ahead
A father shows the CarAlgo app on his smartphone next to his daughter, a young driver, at the wheel

Less worry for parents, more independence for young drivers

The first weeks after passing the test are an important milestone. CarAlgo keeps you informed without being in the car, while giving the new driver the independence they need to gain experience.

Driving data also becomes a conversation starter: fuel use, trips, smoother driving, EcoDrive… all opportunities to gradually build good habits.

CarAlgo connects the driver, their car and their family to make the first miles more relaxed.

List of diagnostics in the CarAlgo app
Detail of a fault code explained in the CarAlgo app
Automatic diagnostics

Fault codes, finally explained clearly.

Every time the engine starts, CarAlgo automatically checks your car's condition. If a fault is detected, you get a notification straight in the app.

  • 1

    Fault code explanation

    What the code actually means for your car, in plain language.

  • 2

    Likely causes

    The reasons that could explain this fault.

  • 3

    Repair advice

    What to do about it, with no technical jargon.

Diagnostics can also be run manually at any time, to test any vehicle — not just your own.

Real preview of the CarAlgo app.

Secure connection

The connection between the Dongle and the mobile app is fully encrypted, with secure network protocols and strong authentication.

No unauthorised person can connect to your vehicle through CarAlgo.

Certified retrofit device

Approved in Europe and the UK, compliant with current automotive standards.

RED CERadio directive
Safety CEElectrical safety
RED UKCAUK market
e-MarkAutomotive approval
Frequently asked questions

Everything you need to know about CarAlgo.

Ready?

Connect your car. Once and for all.

Drive with peace of mind.

Compatible with most petrol, diesel, hybrid and electric vehicles fitted with an OBD-II port.

Testimonials

They transformed their driving experience.

Rebecca

Rebecca

Toulouse

Before CarAlgo

“At the slightest issue, it was total stress. I never knew if it was serious or how much it would cost.”

After CarAlgo

“Thanks to the Diagnostic feature, I spot the problem right away. Even before going to my mechanic, I already knew exactly what needed doing and how much it would cost.”

Maxime

Maxime

Nantes

Before CarAlgo

“I used to drive without really realising my impact on the environment… and sometimes my driving was nervous and risky.”

After CarAlgo

“By following my EcoDrive and driving scores, I learned to anticipate braking and acceleration. My carbon emissions and fuel consumption have gone down.”

Mouloud

Mouloud

Lille

Before CarAlgo

“I'd only find out there was a battery problem… when my car already refused to start on a freezing morning.”

After CarAlgo

“CarAlgo warned me about the risk of a battery failure due to ageing. I replaced it in time, avoiding any cold-start issues.”

Sylver

Sylver

Paris

Before CarAlgo

“I always used to forget my services. Result: late inspections and unexpected breakdowns…”

After CarAlgo

“CarAlgo sends me reminders at just the right time. Zero stress and my car runs perfectly!”

Ricardo

Ricardo

Bordeaux

Before CarAlgo

“I once forgot an important service… it cost me dearly.”

After CarAlgo

“CarAlgo warns me well in advance. Since then, no more late servicing!”

Aminata

Aminata

Lyon

Before CarAlgo

“My daily trips were a complete mystery. I had no idea what my real fuel consumption was.”

After CarAlgo

“Now I can see exactly what I use on every trip. I've adapted my driving and I'm saving 15% on fuel!”