Many engines do not run optimally on 91 octane and in fact need a higher RON rating. Hence, our acceleration times are usually slower than cars in Europe.autos Updated: May 24, 2011 00:47 IST
Q: Regarding the impact of 91 octane fuel on the performance of V6 and V8 petrol engines, I compared the 0-100kph timings of your tests of the BMW 535i and Jaguar XF 5.0L V8, and it looks like the V6 535i (6.1s) is faster than the V8 XF (6.87s). What fuel did you use during these tests? Since all Indian cities do not have 97 octane fuel, using regular fuel might affect the claimed number of the manufacturers. Could you please conduct tests on 91 octane fuel because if the performance of a V8 petrol (XF 5.0L V8 on 91 octane) equals a diesel V6 (Jaguar XF 3.0 D, 0-100 in 6.4s) of that particular model, then buying a V8 does not make sense for buyers in cities where 97 octane is unavailable
A: We use 91 octane for all our tests as standard fuel to maintain uniformity in our figures across the country. However, many engines do not run optimally on 91 octane and in fact need a higher RON rating. Hence, our acceleration times are usually slower than cars in Europe.
Q: I found the Chevrolet Beat to be trendy compared to cars from Maruti, Ford or Hyundai. When will the diesel Beat be launched and what will be the estimated price?
A: The Chevy Beat diesel is in its final stages and we hear it will be launched in early June. It is powered by a one-litre, three-cylinder diesel engine which is compact, light and frugal, and hence you can expect superb economy. Though the price has not been announced, we expect it to be around R 70,000 more than the existing Beat petrol with the same level of equipment.