Petrol in a Diesel Toyota Yaris: What the Tank Holds
The capacity of the fuel tank is one of the first things worth knowing after you have got petrol in a diesel Toyota Yaris, since the proportion of what is in there that is now petrol hinges on it. Each version of the Toyota Yaris we hold figures for is on this page alongside its fuel tank capacity, and the same goes for the engines it was sold with.
Regardless of what the number is, there is a single piece of advice after the mistake. Ring Petrol in Diesel with the engine kept off. We'll come to you and empty it right where it is.
Toyota Yaris fuel tank capacity, by version
The diesel tank on the Toyota Yaris takes anywhere between 42 and 45 litres, according to which version you have.
Within our figures, the Yaris 1.4 D-4D has the smallest fuel tank and the Yaris Verso 1.4 D-4D C the biggest.
| Version | Fuel tank |
|---|---|
| Toyota Yaris 1.4 D-4D | 42 litres |
| Toyota Yaris 1.4 D-4D C | 45 litres |
| Toyota Yaris Verso 1.4 D-4D C | 45 litres |
A few litres of wrong fuel in your Toyota Yaris, and what they mean
Wrong fuel in your Toyota Yaris blends with whatever diesel is still inside your tank, so the share of it that's petrol depends on how full your tank was when you filled up. How much petrol gets to the engine depends a lot on the amount inside your tank. The tank holds up to 45 litres, and in an almost full one a couple of litres remain a minor part of the total, yet in a tank running close to empty the same few litres make up a far greater part.
Frequently, drivers want to know at what point the petrol gets to be too much. Starting the engine is what carries the blend out of your tank and through the pump and the fuel injectors, and so the more useful thing to find out is if it has run.
Whatever the proportion, the right course is to have it emptied, and with a small volume a drain is normally all your Yaris needs.
Engines used in the diesel Yaris
Before you phone, it is worth checking the version name on the badge, since it tells us which motor your Yaris has.
Across the diesel Yaris versions in our data, the badges read D-4D.
Every motor within our figures is 1.4 litres.
If you're not sure which version you have, phone anyway and we'll work it out together.
AdBlue in a diesel Toyota Yaris
With AdBlue, tank size works differently. If you have AdBlue in a diesel Toyota Yaris, your diesel around it doesn't dilute it, since AdBlue is mainly water and doesn't mix with diesel. It sinks to the bottom of your tank, which is where the fuel pump pulls from, so even a tiny quantity gets into your fuel lines.
AdBlue doesn't combust and gives the pump no protection, and as its water evaporates, the urea left over forms crystals in the lines and the filter and attacks the metal next to it.
On some diesel cars, AdBlue has a second tank of its own, and its filler commonly sits alongside the diesel one under the same fuel flap. Where your Yaris has an AdBlue filler, its filler cap is normally blue and fits a smaller pump nozzle than the diesel one.
A fuel drain on your Toyota Yaris, step by step
A fuel drain on your Toyota Yaris clears the entire tank, whatever its size in your version, and it's done where your car is parked. First the contaminated fuel is pumped out, then the filter and fuel lines are flushed. After filling up with fresh diesel, we re-prime the fuel system and fire up the motor.
It makes no difference whether your Yaris is still on the forecourt or left on your drive. Clean diesel is what it runs on after this drain is done, and so you can drive it away.
What AdBlue removal from a diesel Toyota Yaris involves
Clearing your tank completely is how AdBlue removal from a diesel Toyota Yaris starts, since AdBlue does not mix in and settles at the base instead. A motor that has run means cleaning the fuel filter and lines through as well, plus replacing your fuel filter if needed.
What this covers is AdBlue that ended up in your diesel tank, not taking out or turning off the AdBlue system on the car.
The price of a fuel drain on the Toyota Yaris
We don't publish a fixed price, because two call-outs on the same model can be rather dissimilar. How much got in against the size of your tank, petrol or AdBlue, and where the car is now all count, yet whether the Yaris has been driven or only started affects it most.
Those details are what we need to tell you what this work involves. Phone with them ready.
Tank questions about petrol in a diesel Toyota Yaris
What is the fuel tank capacity of the Toyota Yaris?
It depends on the version, from 42 to 45 litres, and the table above shows each one.
Does a bigger tank make petrol less of a problem?
That petrol is still there in a bigger tank, and still reaches the pump when your engine runs, even though a couple of litres form less of the whole. All of it comes out with a fuel drain, as long as your Yaris is turned off.
Diesel versions of the Yaris: how many do you cover?
We keep figures for 3 diesel versions of the Yaris, and you can find yours in the table above by the model name on its badge.
What counts as wrong fuel in my Toyota Yaris?
It means everything put into the diesel tank that is not diesel, and so petrol of every type, even super unleaded, or AdBlue, which has its own dedicated tank.
Can you drain the Toyota Yaris where it is?
Yes, we can. We come to your car, whether it is still at the forecourt or left at home, and so it doesn't need to be shifted or switched on.