SMART forfour Operating Instructions Manual page 256

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Refuelling
Petrol engines
47 kW 55 kW
Fuel tank
Capacity 47
(ltrs.)
of which re 5
serve ca
pacity
(ltrs.)
Fuel Premium unleaded petrol, EN 228,
1
at least 95RON /85MON
1 The petrol engines are designed to run on unleaded petrol of at least 95RON/85MON (130 kW: 98RON/88MON). In countries in which unleaded fuel with at least 95RON/
85MON (130 kW: 98RON/88MON) is not available, you can use unleaded fuel with 91RON (130 kW: 95RON) in emergencies. This, however, can reduce engine output and in
crease fuel consumption. When subjected to heavy loads while burning grade 91RON fuel (130 kW: 95RON), engine damage could result. smart recommends that you always
run your petrol engine on unleaded petrol with a minimum grade of 95RON/85MON (130 kW: 95RON/88MON).
Fluid capacities
Coolant system
Coolant capacity, l (Imp. pints)
Anti corrosion agent/anti freeze (ltrs.)
Windscreen washer system
Total fluid capacity (ltrs.)
70 kW 80 kW
47 47 47
5 5 5
Petrol engines
47 kW 55 kW 70 kW
4.2 4.2 4.6
50:50 50:50 50:50
5 5 5
Technical data
Diesel engines
90 kW 130 kW 50 kW
47 47
5 5
Unleaded Diesel fuel, EN590
premium plus,
EN 228, at least
1
98RON /88MON
80 kW 90 kW 130 kW
4.6 4.6 4.6
50:50 50:50 50:50
5 5 5
70 kW
47 47
5 5
Diesel engines
50 kW 70 kW
6.6 6.6
50:50 50:50
5 5
Reference 10 13