Why does the start/stop in my car not work consistently?

I have recently bought a 2019 Volvo XC60 D4 with a low mileage - 20,000 miles approx. The auto start did not work at all for the first week and now it only works after a fairly long motorway drive - then...

Should I replace a 10 year old battery?

My 2016 Honda Jazz has 50,000 miles on the clock. Should I replace the battery?

Why does the battery on my mild hybrid keep going flat?

I have a Ford Puma 1.0 MHEV but have fault with 12 volt battery losing charge. It will run fine for two or three weeks but then will require jump start two or three times .Previously the car had a total...

Can I fit a larger battery to my car to counter stop/start issues?

To beat the dreaded short journey issue with stop start batteries is it worth putting a bigger capacity battery on my Fabia or will it upset the charging system?