Petrol in a Diesel Toyota iQ: What the Tank Holds
Once you have got petrol in a diesel Toyota iQ, the capacity of its fuel tank is one of the first points to know, as it settles how much of the fuel in there is now petrol. Each version of the Toyota iQ we have data for is set out on this page with its fuel tank size, and so are the motors it was sold with.
The guidance does not change with the number after it has happened. As soon as you switch your engine off then call Petrol in Diesel, we will come out to empty the vehicle where it stands.
How each version stacks up on Toyota iQ fuel tank capacity
The Toyota iQ uses the one diesel tank across each version we hold data for, and that tank takes 32 litres.
Does a little amount of wrong fuel in your Toyota iQ matter?
Wrong fuel in your Toyota iQ blends with whatever diesel is already in the tank, so the proportion of the fuel that's petrol rests on how full your tank was when you filled up. When a few litres of petrol are put into a tank sitting close to empty, they make up a far greater share of what the engine would draw. Added to a nearly full tank of up to 32 litres, the same amount is only a small share of the whole.
Often, drivers want to know at what point the petrol becomes too much. The more helpful thing to know is if the engine has run, since starting the engine is what carries the mixture out of the tank and through the pump and your injectors.
With a modest amount, a fuel drain is usually all your iQ needs, and whatever the share, getting it emptied is the safe thing to do.
Engines fitted to the diesel iQ
The version name on the badge tells us which engine your iQ has, so it's worth reading before you ring.
Our figures show D-4D badges on all diesel versions of the iQ.
Whatever version it is, the motor is 1.4 litres.
When you are not sure which version you drive, phone anyway and we'll work it out together.
When there's AdBlue in a diesel Toyota iQ
Tank size plays out differently with AdBlue. With AdBlue in a diesel Toyota iQ, your diesel sitting inside the tank doesn't dilute it. Being mainly water, AdBlue stays separate from your diesel and settles to the base, which is where your pump draws from. Even a tiny amount ends up in your fuel lines.
AdBlue doesn't burn and gives your pump no protection, and as its water dries out, the urea left over crystallises in the fuel lines and the fuel filter and attacks the metal next to it.
On certain diesel vehicles, AdBlue has a second tank of its own, and its filler commonly sits beside the diesel filler under the same flap. On any iQ with an AdBlue filler, a blue cap generally shows it, and that cap takes a slimmer pump nozzle than the diesel one.
How a fuel drain on your Toyota iQ works
Done where your car is sitting, a fuel drain on your Toyota iQ clears the whole tank, whatever size the tank is on your version. We pump the tainted fuel out, flush the fuel lines and your filter, and refill with fresh diesel ahead of re-priming the system and firing up the engine.
Parked at home or still at the pump, your iQ receives the same job. You can drive it away after the drain is finished, and it'll be running on fresh diesel.
What AdBlue removal from a diesel Toyota iQ takes
AdBlue settles at the base of your tank rather than mixing in, and so draining it totally is the first stage in AdBlue removal from a diesel Toyota iQ. We also rinse the fuel lines and the fuel filter through if the motor has been run, changing the filter where it needs changing.
What this covers is AdBlue that ended up in your diesel tank, not taking out or switching off the AdBlue system on the vehicle.
The price of a fuel drain on the Toyota iQ
The same model can mean quite different call-outs, which is why we do not list a fixed price. Whether the iQ has been run or driven affects it most. After that it depends on how much got in against your fuel tank size, whether petrol or AdBlue went in, and the car's location.
With those details, we can let you know what this job will involve when you ring.
Tank queries about petrol in a diesel Toyota iQ
How many litres is the Toyota iQ fuel tank capacity?
Each version we hold data for uses one tank, and it holds 32 litres.
Does a bigger tank make petrol less of an issue?
The petrol is still there in a larger tank, and still gets to the pump as soon as the engine runs, even though a couple of litres make up less of the whole. A fuel drain removes all of that as long as your iQ stays turned off.
Wrong fuel in my Toyota iQ: what does that include?
Petrol counts whatever the grade, super unleaded included, and so does AdBlue that was meant for its own dedicated tank. Anything other than diesel in your diesel tank is wrong fuel.
Can you drain the Toyota iQ wherever it is?
Yes, we can. We travel to your car, whether it is still on the station forecourt or left at home, so it does not need to be shifted or started.