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    GMP Performance

    3.8 (24 reviews)
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    Services - GMP Performance

    Vehicle battery testing

    Auto electronics installation

    GMP Performance Photos

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    Reviews With Photos

    Is350 - detailed, chrome delete, caliper paint, ceramic coat
    Mike C.

    Even though they specialize in German Auto, I had GMP style my '22 IS350 due to their reputation in the Charlotte area. I am thrilled with the quality of their work, the communication with Phil (my service advisor) and overall professionalism. I had my calipers painted a custom color (provided them with the requested Pantone info), chrome delete, and complete detail including ceramic coating. 5 stars!

    Barry P.

    I first went to GMP in 2014 to get APR performance software for my Audi. It was a great experience and an awesome deal to get 75-85 extra HP and a ton more torque. If you have a German car you need to see them. They have been in business for many years (43 to be exact) and started as parts company. GMP = German Motoring Parts. I had the opportunity to return this month with my friend Sara. She also got her Audi "APR tuned" but they went above and beyond to diagnose and come up with an alternate fix for her taillight, saving her hundreds of $$. They are also proud to show you around an look at some of the exotic project cars they are work on in their Charlotte facility. Well worth the drive to Charlotte for your German vehicle.

    PCV valve and lower hose removed from wife's car after being serviced at GMP, Pressley Rd, nice work, lower pieced together with rubber hose

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    Stephen K.

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    3 years ago

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    Ask the Community - GMP Performance

    Review Highlights - GMP Performance

    I work with Quentin and Stephen quite a bit on my Porsche GT3 and Cayenne both for track day support and recurring maintenance.

    Mentioned in 4 reviews

    Read more highlights

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    Interstate All Battery Center of Charlotte, NC

    Interstate All Battery Center of Charlotte, NC

    (7 reviews)

    I have ALWAYS had a good experience here…read more When my car window wasn't rolling down, Jason spent almost a full hour (in the hot sun) checking my fuses to see if he could help. It ended up being a wiring issue in the door. Also, when my dad's phone battery stopped holding a charge, Jason quickly ordered it in and had everything ready the next day! He did the same for a family friend as well!

    DO NOT SHOP HERE…read more Here is why I give this company a 1 star: I bought a top of the line Interstate AGM battery for 2008 Chevy Avalanche AT $279. Drove away and went shopping around 2pm. At 3pm returned and the truck wouldn't start. Called AAA to get a jump, they tested battery and said it was "defective" - not low, "defective". I thought they just wanted to sell me a battery. Drove away and ran truck for 1 hour, turned off, 15 minutes later...dead. No click, no lights, no nothing!!! Called AAA again, got 2nd jump. Different AAA service person tested battery, said battery was "defective". I called Interstate store and they said it couldn't be the battery, it was the alternator or a short. AAA guy completely disagreed. It's now around 4:30pm, wife is really getting pissed. Drove to another store, let engine run while shopping, came back around 5:15pm, guess what...dead again. Now, since young sales person at Interstate store was adamant about it not being the battery and, hard for me to imagine a brand new Interstate battery would be defective (I assumed they would have been tested at factory), I called a mobile mechanic who charged me $60 to come and check it out, $60 1 hour labor, and $150 for a new AutoZone alternator. I thought this would take care of the problem. Went to the last store to shop and once again, dead. I called AAA for the 3rd time to jump me over the last 5 hours. They tested the battery as well and said it was "defective"...3 different techs, same conclusion. I drove hope and by now it was 10:30pm. In the morning, I called AAA the 4th time to have the truck towed to the nearest Chevy dealership. They started diagnosing the problem and told me they couldn't complete the tests because the battery was....drum roll...."defective". I called the Interstate store to see if they could drive over a new battery as it was clear they sold me a bad battery. They said they could not. I later got a call from an owner who said she would drive over to pick up the original battery, but they'd have to run tests (I've seen that trick before) but, they couldn't bring me a new battery unless I paid for it and then hoped I got my money back after they tested it. At this time, I had no choice but to have the dealership put in a new Delco battery in order to finish testing and get my truck back on the road. They put the new battery in and tested. There was only a 1.2 amp draw coming from my trailer brake controller. They disconnected it and there was only a 35 mil amp draw...virtually nothing. So, I ended up buying an alternator I didn't need, a battery brand and type I didn't want and a total of 12 hours of total time diverted from work over this company's selling me a defective product. Additionally, the traffic and turn into the parking area for this shop is dangerous and not worth the risk to shop there. If I hadn't been in a big, lifted 4x4 truck, I would surely have been hit by reckless drivers. The corporate franchise office contacted me to find out what happened, yet they made no offer to compensate me for the time and expense I paid for their screw up. If you shop at this store, you are a fool. If you buy a franchise from this company you are an even bigger fool.

    GMP Performance - autopartssupplies - Updated September 2026

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