Battery OEM Mazda or OPTIMA

I installed an Optima Yellowtop D35. The D35 is shorter than the Q85, but the terminal cover provided by Optima doubles as a base to increase the batteries height. Great design Optima! Immediately after installing the battery, the "Battery Management System Malfunction" message still displayed. Finally after leaving the car overnight, the message went away on its own. The i-ELOOP system is now functioning as normal.

I have a red top in my XJ and people say the quality has gone down every time Optima is mentioned but I've had nothing but stellar performance from mine. I was about 7 miles in on a trail 2 weeks ago and my alt died. The battery got me back to the main road before it died enough to not run the engine anymore. A little more than an hour back out and some gnarly rock crawling.

I got 7 years out of my 2010 6V Red Top in the Porsche which I replaced with another and recently purchased a 12V Red Top for the Bus. Battery is more expensive than standard but getting 7+ years vs 4 makes it worth while.

The Optima in my Infiniti is 10 years old and still going strong but I've read so many bad things about them recently, I would be hesitant to buy another one.

I have a red top in my 4 motion b6 Passat. I have not had any electrical issues. As long as the optima matches or exceeds the oem battery cca you’ll be fine.

We have one in our 2007 and it has been going strong for almost 7 years.

Had an Optima once. It was fine til it died, and it died hard. These days I stick with Interstate blemished units, since you can get them with cosmetic blems for about $35 from your local dealer. Cable wise, I updated them with the ones from a Mk3 VR6. I like the connectors better. Cables seem to be identical otherwise. Thicker alternator wire from Autotech is a must.

Have two red tops in my 05 GMC. Sneaky suspicion one is bad. They were new when I got the truck six years ago.

Went to start truck after sitting five days and it was dead. Meter showed 12.1 and it charged in an hour which is very fast. Truck would turn over but not run. Checked charge again, primary at 12.4 and secondary at 12.7. Swapped places and truck starts, runs, all accessories work now.

Stay away from optima batteries unless your car specifies an AGM battery because they can be very problematic.

my 2009 had an optima and it only lasted 2 years