1987 Ford Sierra RS500 Cosworth fuel economy
The 1987 Ford Sierra RS500 Cosworth does 11.8 L/100 km (24 mpg, 20 US mpg) in typical real-world driving. Work out what a trip costs in your money below.

Key figures
What does a trip cost?
Real-world economy
Every car uses more or less depending on how it’s driven. On the road, motorway speeds, short trips, traffic and cold weather usually use more. Motora records each drive in your Sierra RS500 Cosworth and works out what it really used from how you drove, priced with pump prices near you. How the drive tracker works.
Build it in 3D
Put your Sierra RS500 Cosworth in your Motora garage, paint it, fit wheels and a body kit, set the stance and park it next to your friends’ cars. See the 3D garage.
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2019 Ford Fiesta ST-Line 3-doorPetrol · 5.4 L/100 km · 52.2 mpg
2018 Ford Fiesta Zetec 3-doorPetrol · 5.7 L/100 km · 49.6 mpg
2009 Ford Focus RS (Mk2)Petrol · 9.4 L/100 km · 30.1 mpg
2016 Ford Focus RSPetrol · 7.7 L/100 km · 36.7 mpgPut your Sierra RS500 Cosworth in Motora
Build it in your 3D garage, and Motora records every drive and works out what it cost in fuel.
Get the appThere’s no official economy result for this car, so the figure is a typical real-world one. Calculator prices are examples.