Tesco Momentum 99
Tesco says most of its filling stations in England, Scotland and Wales stock Momentum 99. It does not currently supply Momentum 99 in Northern Ireland.
Find 99 RON petrol.
Compare prices near you
Search 99 RON petrol prices by postcode or location, including Tesco Momentum 99 and Esso Supreme+ 99. Compare nearby prices, use the website route planner to check whether a cheaper stop along your route is worth the extra drive.
RON 99 average
193.7p2,503 matching premium
petrol prices19.20p/l above
E10 average
Search RON 99 petrol prices near you
Other E5 excludes the 99 RON group. All Super unleaded E5 includes both. Availability varies by site.
Price checks run every 5 minutes using Government and retailer updates.
Compare price, availability and the journey
Availability varies by site. Search recent RON 99 prices, then compare the price difference with any extra driving.
Search RON 99 separately
Route & Fuel keeps RON 99 results separate from wider super unleaded prices.
Compare the current price difference
Use the local average and price range to see how much a fill could differ.
Include the detour
Use the app to include extra fuel and traffic before choosing a stop.
At current listed UK averages, 55 litres of RON 99 petrol costs about £10.56 more at the pump than E10
To recover that price difference through fuel economy alone, the vehicle would need to travel roughly 11.0% farther per litre on RON 99. This is a break-even calculation, not an expected improvement for your car. Use the grade your manufacturer specifies.
RON 99 and E10 average prices
This chart compares recent UK average prices. It does not confirm that every station stocks RON 99 or predict the next price change.
RON 99 petrolUnleaded E10
Before you fill up
A fuel price is useful only when you know the grade, when it changed and whether the extra journey is worth it.
Is RON 99 the same as E5?
No. E5 describes ethanol content; RON 99 is an octane rating. Availability varies by site.
Which retailers sell RON 99?
Tesco Momentum 99 and Esso Synergy Supreme+ 99 are retailer examples. Tesco says Momentum 99 is stocked at most of its filling stations in England, Scotland and Wales, and is not supplied in Northern Ireland. Availability varies by site.
Can I use RON 99 in a car that needs RON 95?
Most petrol cars can physically use a higher octane grade, but follow the owner's manual and do not assume the price premium will be recovered.
Compare RON 99 stops across a wider search radius.
Use Route & Fuel to check availability by site, compare extra-driving checks with live traffic and open your chosen station in Google Maps.
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About these prices
Route & Fuel keeps national averages separate from individual station prices. These latest UK fuel prices were last refreshed on 13 October 2026; typical ranges show where most prices sit instead of treating one unusually low price as a guaranteed bargain.