Porsche Specialist Hertfordshire, UK

Sales 31

Service

Tuning

Parts

Sales

Porsche for sale

JZM sell exceptional pre-owned Porsche models, focusing on GTs, RSs, limited editions and iconic 911 classics. You’ll find most of our Porsche (along with a few other special marques) for sale at our facility, though some vehicles are not listed publicly. Let us know what you’re looking for.

The JZM Sales Inspection

We research the provenance of each Porsche before it undergoes our exacting pre-sale inspection in the workshop. For every Porsche that reaches our facility, there are others that don’t. This process ensures we acquire and supply only the finest quality cars our customers expect.

Sales Warranty

JZM is recognised as one of the UK’s leading Porsche specialists, with a long-standing reputation built on the exceptional vehicles we have bought, sold, and serviced. All JZM Porsche are sold with a warranty – please contact us for full details.

Off-Market Sales

Explore exclusive and rare Porsche offerings via JZM Porsche’s off-market sales platform.

Service & tuning

Porsche service & tuning

Every Porsche in for servicing and tuning at JZM goes through our bespoke health-check inspection as standard. We’re always happy to go through the report with you afterwards, the more you know about your car, the better.

Porsche service

Our original Porsche servicing and diagnostics equipment is probably the most comprehensive collection in the UK. JZM were the first Porsche PXN (Porsche eXternal Network) independent specialist in the UK and have always been updated up to the latest PIWIS Ⅲ. We also have a direct data and comms connection to Porsche HQ.

Porsche tuning

JZM’s extensive tuning experience comes from the knowledge of what works and what doesn’t. We are enthusiastic yet realistic refiners of Porsche only recommending and fitting the best bits – tried and tested parts that really work. Manthey Racing might be considered at the pinnacle of Porsche tuning, we’ve been approved fitters since 1999.

Storage

Porsche storage

JZM Storage is located north west of London, just off the M25 between the M1 and M40 junctions. Outside of the ULEZ zone. We’re not far from Kings Langley train station, a short journey from Heathrow and Luton airport, or you can land your helicopter just up the road. Accessible, convenient, care and security.

Peace of mind

With our two-floor storage facility, and over 40 years of experience working on Porsche, we know the cars well enough to provide a first-class service. While your Porsche rests with us, we can also carry out servicing, MOTs, and any other required work in our on-site workshop, readying your car for its next adventure.

Parts

Porsche parts

Porsche deserve the right parts starting with no less than OEM, and better as specified. We only stock brand parts that we know are the best. We don’t stock to profit or for commission even when they take a little longer to arrive but they’ll be better for the drive.

Performance guarantee

The reputable brands that make high quality parts stand by their product performance and provide guarantees. We believe what goes on must make the car better, and the driver happier. Complete peace of mind because should anything happen… no headaches.

Get up to speed with JZM Porsche

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EXCELLENT

Based on 482 reviews

Daniel Shemtob

I had an excellent experience working with Russ and the JZM team. From start to finish, Russ was professional, transparent, and incredibly knowledgeable about the market. What stood out most was how proactive he was—he quickly sourced a serious buyer and handled the entire process with a high level of detail and care. Communication was clear throughout, and I always felt like he was representing my best interests while also being realistic about the market. Selling a car like this requires trust, and Russ delivered on every level. I wouldn’t hesitate to work with him again or recommend him to anyone looking to buy or sell a special car.

David Nield

JZM have been looking after my 16 year old 997 for two years now. Their service has always been faultless and their pricing fair. What I really like is their friendly and helpful team. I know I’m not at the top of the Porsche tree but they always make me feel welcomed and valued. Special shout out to for Chele, I really appreciate your help, thank you.

Matthew Smith

I had a Dissident fixed ducktail fitted to my C4S by JZM. There were a few hitches in terms of the technical side (not their fault) but Michele Gibbs helped get the job done on time regardless - Super happy with the work they did. Also did an oil change at the same time and while we were waiting they let my 9 YO son look around the sales area without hassling him. He got to see a Carrera GT close-up.... Plus, we got to meet Targa, the doggo! These guys clearly bleed Porsche and the place itself is a destination so worth a visit. I'll be back at JZM soon for a few other things that need doing, and from here on out will be using them to service the car too.

mike jackson

Recently bought a GT4 from these people. I can only say the best experience I’ve ever had with a luxury vehicle purchase. Very friendly professional vibe. Many Thanks 🙏👌

Kieran Chandler

Been there a few times and they always do a great job. They are great people and treat you well. This time was especially good service. Michele was very prompt at responding any queries and very helpful, very much appreciated!

Michael Gallagher

5-star service yet again from JZM. Called from the motoroway with a fault on the dash, Chele told me to bring the car straight in, quick diagnostic and turns out I was lucky to be so close. Chele had the car checked in to repair, and infact called me a week earlier than expected to tell me it was fixed. Top place with Top people !!

Ben

I cannot recommend JZM Porsche highly enough. The service from start to finish was excellent, with clear communication, a professional approach and a real attention to detail throughout. A special mention has to go to Michele Gibbs, who was absolutely fantastic. Michele was helpful, reassuring and kept everything clear at every stage, which made the whole experience smooth and stress-free. It is rare to find a company that combines specialist knowledge with such great customer service. A massive thank you to Michele and the team at JZM Porsche — genuinely first-class service.

Ant's channel

Excellent service from the JZM team and special thanks to Chele on reception organising all the details, they Installed a JCR exhaust system on my Spyder RS in minimal time and it’s made the car in my view complete now, unbelievable sound.

Paul

Have been using JZM since the late 90's, initially with my 993 and then also my 997 Turbo, bought at JZM, for the last 11 years. Just had a few small bits and pieces that had been identified in last healthcheck, which had become a bit more urgent. Once again would like to commend Chele (Michelle Gibbs), for looking after everything from initial booking and finalizing what needed doing, and then a spotless car ready for me when it was promised. As always a very positive experience and Chele is a real asset to the JZM team being extremely professional, with excellent communication skills and very friendly. The coffee is also very good !!!

jon leonard

Absolutely outstanding service. I have contacted these guys about sales cars before and they have always been super helpful. I sent my 993 down for some work as local garages couldn’t fix it. Michelle was super at communicating and I knew exactly what was going on at all times. Mega impressed and will definitely be back. 5 stars 🌟 🌟🌟🌟🌟