SynGas – Plug-and-Play OBD2 Fuel Efficiency Device
- 🇬🇧 Shipped from the UK
- ↩️ 30-day easy returns
- 🔒 Secure checkout
Use less fuel. Drive smarter. Stop watching the pump steal your money.
Petrol and diesel prices in the UK are still painful — and most cars are quietly burning more fuel than they need to. SynGas is a small, plug-and-play OBD2 device designed to help your car run more efficiently, day after day, without changing how you drive.
It plugs into the OBD2 diagnostic port already in your car (every petrol car since 2001 and most diesels since 2004 have one). No tools. No garage visit. No app. Just plug it in, drive normally, and let it adapt to your vehicle and habits over time.
Why UK drivers fit SynGas
- Designed to help reduce fuel consumption — supports more efficient combustion over time
- Plug-and-play OBD2 installation — slots into the diagnostic port already in your car
- No tools or technical know-how needed — fitted in under 30 seconds
- Adapts to your driving habits — calibrates to how you actually drive
- Compatible with most OBD2-equipped cars — petrol, diesel and hybrid (post-2001 in the UK)
- Compact and out of the way — designed to stay plugged in long-term
- 30-day money-back guarantee — try it on your daily commute, risk-free
- Fast UK delivery — dispatched from our UK warehouse
How SynGas works
- Find your OBD2 port — usually under the steering column or near the driver's-side fuse box.
- Plug SynGas in — the small LED lights up to confirm power.
- Drive as normal — for around 100–200 miles, SynGas calibrates to your engine and driving style.
- Leave it connected — keep it plugged in for ongoing efficiency support. Unplug only when your garage needs the port for diagnostics.
Compatibility
SynGas works with most OBD2-equipped vehicles. In the UK, that covers virtually all petrol cars from 2001 onwards and diesels from 2004 onwards. Suitable for petrol, diesel, hybrid and dual-fuel vehicles. Not designed for fully electric vehicles (which don't use fuel data via OBD2).
What's in the box
- SynGas OBD2 fuel-efficiency device(s)
- Quick-start guide (UK English)
- Plain, discreet packaging
Quantity matches your selected pack size.
Shipping & returns
Fast UK delivery: Tracked 2–5 working day delivery from our UK warehouse. You'll get a tracking link by email on dispatch.
30-day money-back guarantee: Try SynGas on your daily drive. If it's not for you, contact our UK support team within 30 days for a full refund — no awkward questions.
UK customer support: Friendly, UK-based team available by email Monday to Friday.
Frequently asked questions
Will SynGas work in my car?
SynGas is compatible with most cars manufactured from 2001 onwards (petrol) and 2004 onwards (diesel) — essentially anything with a standard 16-pin OBD2 port. Check under the steering column: if you can see a 16-pin trapezoid socket, you're good to go.
How much fuel will I actually save?
Results vary depending on your vehicle, route and driving style — anyone claiming a fixed percentage isn't being straight with you. SynGas is designed to support more efficient driving over time, and many UK drivers report a noticeable difference after the first 100–200 miles of calibration.
Will SynGas affect my warranty?
SynGas plugs into the standard diagnostic port and doesn't modify engine software — it's a passive accessory. If you're under manufacturer warranty and unsure, check with your dealer first.
Can I leave it plugged in permanently?
Yes — that's the idea. Most drivers leave it plugged in long-term. Only remove it if your garage needs the diagnostic port for servicing.
Will it drain my battery?
No. SynGas draws very little power — significantly less than a phone charger. It's designed to stay connected without affecting your battery.
Is it legal in the UK?
Yes. SynGas is a passive plug-and-play accessory that uses your car's existing OBD2 port — the same port your garage uses for diagnostics.
How quickly will it arrive?
Tracked 2–5 working day delivery from our UK warehouse.
What if it's not right for me?
You're covered by our 30-day money-back guarantee. Email our UK support team and we'll sort a refund — no fuss.
Why buy from us
- ✅ 30-day money-back guarantee
- ✅ Tracked UK delivery (2–5 working days)
- ✅ UK-based customer support
- ✅ Plug-and-play — no tools, no garage visit
- ✅ Discreet, plain packaging