I’ve tended to use E5, now E10 95RON petrol, either from Tesco or local Esso station.
I haven’t noticed any difference in fuel consumption between E5 and E10.
I’m planning to fill a tank with RON98 petrol, to determine if economy and/or performance improves, although suspect performance will largely be the same due to the predominantly electric motor drive of the hybrid system.
I have noticed swifter pick up when the eco mode is off, a feeling that the accelerator response is dulled whilst in eco mode, which I experimented with in urban environments, when the car moves away from standstill frequently. I haven’t run the car out of eco mode for long periods, so will likely run a tank of E10 95RON without eco mode, then compare to a tank of E5 99RON in and out of ECO mode. I’m driving extensively on motorways several times a week, with urban parts of journey at either end. I stick to 70mph on motorways, although for many stretches this is reduced to 60/50/40 variable speed limit with periods of stop/start congestion.
The car fuel consumption reading, if this is to believed, rarely drops below 60 mpg and am averaging mid 60s mpg, which I feel is excellent for an automatic car with fairly brisk acceleration. Whilst driving small SUV manual hire cars, such as Renault Captur and Hyundai Kona, I’ve averaged mid 40s mpg, with more lethargic engines. A Skoda Octavia auto 150PS petrol averaged around 40 and had decent acceleration, although a much larger car and very spacious seating and boot space. I was impressed with a Vauxhall Crossland, 130PS manual, much more spacious than the Captur and Kona, both in rear seat width/legroom and boot, with a lively engine, yet similar reported fuel economy.
I find the Jazz a good balance between economy, space and performance and it’s narrower width is very relaxing whilst driving in urban environments, passing rows of parked cars with oncoming traffic and ease of parking, due to shorter length and good visibility. Although a narrower width, the passenger space doesn’t feel constrained, although a centre rear passenger would probably be snug but I’m not likely carry five in the car.
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