Hello Folks,

I purchased a 2015(65) 1.25(82) Fiesta back in December 2015 and I'm just wondering how many miles it would take for the car to break in to allow optimal power delivery / fuel economy?

Before I purchased it, I previously drove a 2014(14) version of the exact same car but to Euro 5 emissions rather than Euro 6 emissions by looking at the VIN check. When I handed that car over to my Mam, it had just over 7k on the clock and was starting to break in.

I had a shot of it very recently with over 8k on the clock (just to park  it up down the street) and compared to mine, it went like s**t of a shovel and the power delivery in 1st and 2nd gear seemed to be a lot more rapid and punchy. Also started smoothly from a cold start.

Do you think my car (the 65 plate) will need a longer break in period or do you think that the Euro 6 emissions will hinder the economy / power output compared to the Euro 5 with particular     regards to gear ratios etc?

Do the naturally aspirated Duratec engines take longer to break in than a more contemporary engine?

I know I should've parted with the extra £1500 quid for an Ecoboost but can't make any major purchases yet or get rid for various reasons.

Just for the record, my car (the 65 plate) has just under 3k on the clock.

Cheers

D

Break in period will be the same, the euro 6 emission regs will strangle it and give the impression of less power.