Click to view our fantastic subscription offers

Instant access to the F1 paddock

You have 10 views remaining

You have read 5 stories this month. After 15, you will need to register or subscribe.

Register with us for free to view 30 stories a month.

Or subscribe to AUTOSPORT+ for unlimited news stories and access to our exclusive subscriber-only content.

Our commitment to quality journalism

We've introduced metered access to AUTOSPORT which will ensure that the majority of our visitors can continue to view the site for free. But we think that is worth a small investment from those who use it most, so that we can continue to send the leading experts in their field to motor racing paddocks all over the world to break the latest news and produce the most compelling interviews and race reports.

Every visitor gets 15 free page views per month. Once you reach the limit you can register to get 30 views or choose one of our value-for-money subscription packages to continue viewing and to get additional access to a range of features including:

  • Unlimited access to AUTOSPORT with news and views from the paddock
  • Enjoy AUTOSPORT+: subscriber-only analysis, comment and top-quality pictures
  • Get AUTOSPORT magazine in a digital format on your computer or iPad every week
  • Full access to FORIX - the world's best motorsport statistics website

We greatly appreciate your continued support to keep AUTOSPORT at the forefront of motorsport coverage, and we look forward to welcoming you as a new subscriber.

Glenn Freeman Editor
Find out more about our subscriptions

Boost levels will remain unchanged for the Indianapolis 500

Boost levels unchanged for Indy 500IndyCar has confirmed that it will not change the boost levels for this weekend's Indy 500 for what it describes as "competition and safety" reasons.

The series mandates a boost level of 130 kilopascals for Superspeedway events, although it added an additional 10 kPa for Fast Friday and both days of qualifying last week, resulting in an estimated 40-50 extra horsepower and speeds of more than 226mph.

IndyCar vice-president of competition Will Phillips said that keeping the higher boost levels for the race had been considered, but rejected after discussion with the three engine manufacturers.

"After evaluating a variety of options and speaking with all engine manufacturers, we feel it is best from a both a competition and safety standpoint to maintain the current superspeedway boost level for our Lotus-powered entrants," said Phillips.

"At this point, there are too many unknown variables in allowing an engine to run a full-race distance at the increased boost level, so it's something we are going to need to explore further.

"At the beginning of the season we mandated there would be no changes to performance regulations prior to June 18, and we plan to maintain that time frame."

Beaux Barfield, president of competition for INDYCAR, said: "From a safety standpoint, we will be keeping a close eye on speeds as the race progresses to ensure that all cars are within 105 per cent of the race leader's pace. We want to make sure that we are managing the speeds and car placement as the drivers navigate through traffic."

The additional boost levels would have caused concern to at least two of the three engine manufacturers.

Lotus is currently struggling to remain within the 105 per cent range of the frontrunners, while Honda is concerned that there is still a discrepancy between its single-turbo engine and the twin-turbo version used by Chevrolet despite having been allowed to make a recent parity change. This deficit would be magnified by the addition of more boost.

  More news  
Read the AUTOSPORT Digital Edition
Visit the shop
See highlights from 60 years of AUTOSPORT