Just had my '24 GR Corolla with Lars at Auto Upgrades...astounding result..!! It wasn't just the 50hp and 70nm of torque that I gained,(which is pretty bloody cool I admit), but as much as anything it was dealing with Lars and the considered advice he gave me...no dumb upselling, just good advice and an amazing result..cannot recommend Auto Upgrades enough...many thanks Lars..!! Stoked...
John Cavill - Titirangi, Auckland.
Excellent service from Lars. Taken the V12 Vantage up that extra level to fully release the capacity and performance. Thanks Lars
Paul Gardner - Hauraki, Auckland.
Wow, what an amazing experience meeting Lars! He’s incredibly professional and intelligent—he knows exactly what he’s talking about and explains everything clearly so you understand the process. My Lexus 460 is an absolute beast now! I love it even more after having it tuned by the best. Big thank you to you, Lars—awesome work!
Dwaine Chase - Manurewa, Auckland.
Very friendly, responsive, and knowledgeable service.
Lars tuned my 2021 Kia Stinger.
Amazing result. Drives super smooth, nothing obvious but when you put your foot down, it is a massive difference in acceleration and maintaining that through to higher speeds.
As the kids say - this thing rips!
Great work Lars

Just got my Mazda Atenza tuned with Lars today. The change in how my car drives is phenomenal, I couldn’t really tell after it was tuned, but at night with little traffic on the road, I could really tell how dramatically my car has changed. Get your car tuned for performance and fuel efficiency with Lars ASAP!!!!
Yuro Lee - Bayview, Auckland.
Lars is excellent to deal with , explains everything, very happy with tune up
Nigel Teape - Bayswater, Auckland.
I brought a Nissan Micra in to get tuned, and it has totally transformed the car. It runs a lot smoother, is more responsive, and has more power. I can’t recommend it enough!!
Ned Verrall - Highland Park, Auckland.
It was everything that their add said it was. Fast and easy. No bull shit. Job well done. Cheers.
Matt Carter - CBD, Auckland.
Had Lars have a play with my tow vehicle to help with pulling my caravan. Whilst driving back to Hamilton isn't the best test of capabilities, I could notice the difference up inclines and from a stop.
Getting up to speed is a breeze, there seems to be little to no delay throttle delay pulling out from roundabouts anymore, and funnily enough, the faults he found with the EGR seem to have been the cause of my Cruise Control not working! So I was stoked to see something was fixed that we hadn't even discussed.
Thanks again Lars, I look forward to seeing how the Rexton performs with a van behind it in a few weeks!
Cameron Bull - Eureka, Waikato District.
Expert knowledge about tuning and nice and friendly
Kyle Thompson - Albany, Auckland.
I took my campervan to Lars after being a little disappointed on its hill climbing abilities. Lars tuned the van and it now feels like it’s breathing properly. It pulls better and drives way better. The extra torque means it can pull up hills like a train. Super easy to deal with and very knowledgeable.
David Mason - Hobsonville, Auckland.
Driving into Lars's Auto Upgrades Performance Tuning Workshop this morning I noticed the pure white walls, ceiling, & floor, secured with a roller door & only enough space for my car parked behind his Porsche. It realistically felt like my Audi was admitted into an operating theater, especially when I saw a laptop, a few hard-drive like devices, & cables organized ontop of a multi-draw rolling tool-chest & Lars explaining his scope of auto-tuning practice going in-depth of what, how, and why he will be performing a Stage 1 ECU & DSG remap truly had me experiencing that he was consulting his surgical procedure on my car today.
To Lars,
Words cannot emphasize how grateful I am for the quick & efficient service you have provided today on my 2018 1st generation Audi Q2 2.0 TFSI Quattro. I couldn't be happier with how you transformed my ride to stage 1 level increasing 55hp & 100Nm from stock standard within a few hours. I really appreciate your skills, wisdom, knowledge, expertise, & humbleness you shared with me today. You really are a "CAR DOCTOR" specializing in performance tuning and unleashing a car's potential that the manufacturers restrict. I cannot wait for you to work on my car again for Stage 2 tuning.
