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...

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?

Should I use a battery conditioner if I don't drive my car much over winter?

I have recently bought a 2014 Ford Fiesta 1.0 Ecoboost - my first car with a stop/start engine and battery system. In the winter, I use the car very little and would like to top up the battery using my...

What replacement stop start battery would you recommend?

What replacement stop start battery would you recommend for a Mazda CX-30?