MPG and running costs
The GRMN is based on a humble Yaris, so you’d expect it to be relatively cheap to run – and based on the claimed figures, you’d be right. At pumps Toyota says you’ll see a return of 37.7mpg, while CO2 emissions run to 170g/km.
However, work the supercharged unit hard and the fuel consumption will drop to the mid to high 20s, which isn’t so bad in itself, but when it’s combined with the measly 35-litre tank, you’ll find that the Yaris will barely go 200 miles between refills.
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The rest of the running costs will be fairly low, with the Toyota’s light weight paying dividends when it comes to brake and tyre wear. Some of the more bespoke parts, such as the Sachs dampers, will be more expensive, but it’s a small price to pay for what is essentially a bespoke, low volume performance car.