HAD - Hartwell Autosport Developments

HAD - Hartwell Autosport Developments we are a rolling road shop located in tewkesbury gl20 7be Any questions feel free to message us

22/05/2026

We currently have an appointment available at 8am on Saturday 23rd for anyone interested in a power run or vehicle health check.
If you would like to book the slot, please get in touch.
Many thanks.

07/05/2026

We currently have an appointment available at 7:30am on Saturday 9th for anyone interested in a power run or vehicle health check.
If you would like to book the slot, please get in touch.
Many thanks.

24/04/2026

Due to a cancellation, we now have an evening slot available today at 6:00 PM. If you require a power run or a last-minute health check ahead of weekend racing, we would be pleased to accommodate you.
Please get in touch to secure the booking.

18/03/2026

Just for anyone looking to book in as we are having lots of last minute requests for spaces. The next evening space is the 13th of April and the next Saturday space is the 9th of may at the moment.
This will probably change but if you want a slot please message us but be prepared I can't fit people in the same week.

27/02/2026

Last minute cancellation for tomorrow morning means that we have very rare space before race season.

If you have a car ready to go and looking to get booked in please message us.

Fresh into the workshop: this MX-5 race car 🔧🏁After running it on our in-house dyno, we uncovered some sensor calibratio...
31/01/2026

Fresh into the workshop: this MX-5 race car 🔧🏁
After running it on our in-house dyno, we uncovered some sensor calibration issues that were holding it back. Once rectified, the results spoke for themselves—more power, a much smoother power curve, and improved consistency.
The end result?
A more reliable, more drivable, and ultimately quicker race car where it counts. Exactly what you want on track.
If you want to make the most of your setup, you know where we are.

🏁 HAD - Hartwell Autosport DevelopmentsWINTER HEALTH CHECK + DYNO PACKAGE🚗 Get Your Car Ready for Winter & Beyond!Whethe...
29/09/2025

🏁 HAD - Hartwell Autosport Developments
WINTER HEALTH CHECK + DYNO PACKAGE

🚗 Get Your Car Ready for Winter & Beyond!
Whether your vehicle is being stored or rebuilt, don’t let winter catch you off guard. Our exclusive Winter Dyno Health Check ensures your performance stays sharp from season to season.

❄️ Pre-Winter Dyno Run

✅ Baseline power & torque figures
✅ Full system health check
✅ Engine performance diagnostics

🔧 Post-Winter Dyno Run

✅ Compare power before & after storage/rebuild
✅ Ensure no performance loss
✅ Spot issues early before the season kicks off

Drop us a message to find out more !!!

29/07/2025

Just had a cancellation for Wednesday evening if anyone wants a last minute check over before mens nationals drop us a message!!!!

24/07/2025

We only have a limited number of spaces left before ladies and jr nationals!!!

If you want a space and are not booked in I'd advise contacting us sooner rather than later

09/07/2025

We have 5 sessions left before mens nationals if anyone needs any Dyno time please message us to book to avoid disappointment

Also we have spaces for injector testing

25/06/2025

One of the big jobs we had in has been completed faster then expected .So we have a couple of power run slots available Saturday for anyone looking to see what they are running

Address

Tewkesbury
GL207BE

Opening Hours

Monday 5pm - 8pm
Tuesday 5pm - 8pm
Wednesday 5pm - 8pm
Thursday 5pm - 8pm
Friday 5pm - 8pm
Saturday 10am - 4pm

Telephone

+447469881217

Website

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