Rental companies
None of them fit interlocks, and none will let you fit one to their vehicle. It is not a service that exists at a rental counter.
If your licence carries the “I” condition, DriveTest requires the test vehicle to have an ignition interlock fitted. We bring a certified, insured, unmarked car to your centre an hour before your slot, with an instructor who knows the device.

An “I” condition means you may drive only a vehicle fitted with an approved ignition interlock, and that rule does not pause for a road test. DriveTest inspects the vehicle before the examiner gets in. Most people discover this in the week before the appointment, then find there are exactly three places to look and none of them work.
None of them fit interlocks, and none will let you fit one to their vehicle. It is not a service that exists at a rental counter.
Smart Start and ALCOLOCK lease devices, not cars. They install on a vehicle you already own, which is no help if the problem is the vehicle.
Understandably few people hand over the keys for a driving test — and Ontario can charge a vehicle owner who knowingly lets someone drive without the device.
That gap is the whole reason this service exists.
DriveTest publishes the conditions that make a road test “out of order”. This is their own framing, not ours.
If your test is declared out-of-order, you lose 50% of your road test fee. The other 50% remains as a credit on your driving record and may be applied when booking a new test. This applies to a vehicle you own and to a vehicle you have borrowed (parent, friend, or driving instructor) or rented.
DriveTest — Road Test Vehicle RequirementsThree of those conditions concern interlocks, and the difference between them matters a great deal on the day. Only one of the three gets you a free reschedule.
“Ignition interlock device not installed if a requirement exists.” The most common way people lose a date they waited months for.
It works the other way too. The vehicle and the conditions printed on your licence have to match each other exactly.
If the unit faults at the start or during a rolling retest, DriveTest reschedules free of charge. If you can’t give a clean sample, the forfeit stands.
Source: DriveTest, Road Test Vehicle Requirements. You lose 50% of the road test fee; the other 50% stays as a credit on your driving record. The rule applies to a vehicle you own, one you borrow from a parent, friend or driving instructor, and one you rent.
Set out properly, because “car rental” means something different at every driving school in this city and most of them do not say which.
DriveTest does not allow passengers during a road test. Your instructor waits in the car park while you drive with the examiner. That is why the practice hour beforehand matters so much — it is the only coaching you get.
A 9:00 am slot, hour by hour. The only part with any drama in it takes about ninety seconds.
Same car you will test in, in the DriveTest car park. Paperwork is four minutes: licence, the conditions printed on it, and the class of test.
Fresh mouthpiece, then you blow. We deliberately trigger a rolling retest while parked, so the first time that alarm sounds is not mid-test.
Twenty minutes on the streets around the centre. Parallel park somewhere real, three-point turn, find the mirror you have stopped checking.
The examiner inspects the car, we step out, and you drive. Afterwards we take the car and you get on with your day.
They are not interchangeable. Canotek runs G2 and G road tests only; Walkley runs every licence class and is the only Ottawa centre with Saturday road test appointments.
By arrangement. As of September 2026 we could not find a driving school in any of those four cities advertising an interlock-equipped car for a road test, which is why people make the drive. Put the ten hours and the road test into the same weekend and it becomes one trip. Every area we take an interlock test car in Eastern Ontario is listed with its drive time.
A handset on a coiled cable, about the size of a TV remote. All four get practised in the hour before your test.
Disposable, and a fresh one goes on for every session and every booking.
The device won’t start the car above a 0.02 BAC preset limit, and it wants a steady hum-and-blow rather than a hard puff. Most people fail their first two attempts on technique alone.
MTO describes it as being prompted to pull over and give a breath sample while the vehicle is running. Miss one and the device warns you, records it, and sets off lights and horn until you switch off — it does not cut the engine.
Mouthwash and some medications can leave mouth alcohol that reads; rinse with water and wait 10–15 minutes. Every 60 days you return to the provider so they can download the data and calibrate the unit.
Preset limit and rolling-retest behaviour: Ontario Ministry of Transportation, Ignition Interlock Program. Calibration interval: Reduced Suspension with Ignition Interlock Conduct Review Program. How does an ignition interlock work? covers the sensor, the preset limit and the retest in full.
This service only helps people who actually have a road test to sit. Check how long your licence was invalid before you ask us for anything — it is the only thing that decides the answer.
Yes, and you should — you will not need us for the vehicle. Your own car has to meet every other DriveTest requirement too: valid insurance and plates, working lights, horn, brakes, seatbelts and mirrors, and no warning lights showing. If you would still like the practice hour or the ten-hour course, book those on their own.
No. The unit in our vehicle is ours, on our own service schedule. It has nothing to do with the device leased to you by Smart Start or ALCOLOCK, and nothing you do in our car appears in your monitoring record.
There are two different outcomes and the distinction is worth knowing. If you cannot provide an acceptable sample, DriveTest cancels the test and you lose 50% of the fee. If the device will not accept a valid sample — a fault on its side, at the start or during a rolling retest — DriveTest reschedules you free of charge.
No. DriveTest declares a test out of order if there are passengers in the vehicle, so the instructor waits in the car park. Everything they can usefully tell you happens in the hour beforehand.
We rebook you at no charge. Their cancellation is not your problem and it is not going to cost you a second booking fee with us.
Not necessarily. If you have been driving on a device for months and the rolling retests no longer startle you, the car and the warm-up hour may be all you need. If you have never used one, or you have not driven in years, the ten-hour ignition interlock training course is what turns test day into an ordinary morning.
We bring an ignition interlock road test car across Ontario, to every DriveTest centre listed here:
The rules the examiner works to are in the guide to a G2 road test with an ignition interlock.
What to bring, what the examiner checks before you drive, and the vehicle faults that end an Ontario road test in the car park before you turn a wheel.
The short answer is no, and it matters most on a road test. What the "I" condition permits, what it costs to ignore, and who else can be charged for it.
The two Ottawa centres are not interchangeable. Which licence classes each handles, which one runs Saturday road tests, and how to choose between them.
Tell us the date, the DriveTest centre and the class of test. We confirm whether the car and an instructor are free and quote it in writing, usually the same day. No deposit to check.
Phone is faster. Someone answers Monday to Saturday, evenings included.