What Is the Autel MK808S?

The Autel MK808S is a mid-range OBD2 diagnostic scanner designed for independent mechanics, small garages, and serious DIY enthusiasts across the UK. It sits in that sweet spot between basic code readers and the full-fat professional systems — giving you all-system diagnostics without the £2,000+ price tag of something like the Autel MaxiSys Ultra.

I've been using Autel scanners for a few years now. Started with the AP200 Bluetooth dongle on my own car, then moved up. The MK808S was the point where I felt like I'd got a proper workshop-grade tool in my hands. Not a toy. Not overkill. Just right.

Manufactured by Autel Europe UK Ltd, the device runs on Android and connects via OBD2 to cover over 80 vehicle makes. It handles everything from reading fault codes to active tests, service resets, and basic key programming functions. For a scanner under £400, that's genuinely impressive.

Who's It Actually For?

Mobile mechanics. Home garage warriors. Small independent workshops that can't justify a MaxiSys but need more than a £30 Bluetooth reader. If you're diagnosing one or two cars a week — maybe your own fleet, maybe mates' motors — this is the tier you want.

Autel MK808S Features and Specifications

The MK808S packs a 7-inch touchscreen, quad-core processor, and 32GB internal storage. It's not the fastest tablet you'll ever use, but it's responsive enough for diagnostic work without frustrating lag.

Diagnostic Functions

All-system coverage means you're not limited to engine codes. ABS, SRS, transmission, TPMS, EPB — it reads and clears across the lot. The service functions include oil reset, EPB service, SAS calibration, DPF regeneration, and injector coding. That DPF regen alone saves you a dealer visit on most modern diesels.

There's also AutoVIN for automatic vehicle identification. Plug in, it reads the VIN, pulls up the right vehicle profile. Saves faffing about scrolling through menus. Small thing, but when you're under a car in the rain on Upper Newtownards Road in February, every saved minute counts., a favourite among Britain’s tradespeople

Where the MK808S Sits in the Autel Scanner Range

Autel's product line can be confusing. There's a lot of overlap and the naming conventions don't always help. Here's how the MK808S compares to its siblings — from the entry-level scan tools right up to the professional units.

So what's the catch with the MK808S? Honestly, it's the lack of bi-directional control. You can read data and run some active tests, but you can't command actuators the way a MaxiSys can. For most independent garages doing servicing and fault-finding, that's fine. If you're doing advanced ECU programming or module coding, you'll need to step up.

MK808S vs MaxiCOM MK808

People ask me this constantly. The MK808S is essentially the refreshed version of the Autel MaxiCOM MK808. Faster processor, more service functions (28 vs 22 at last count), and better vehicle coverage for 2020+ models. Worth the extra £50? I'd say yes. The older MK808 struggles with some newer VAG and BMW protocols that the S variant handles without issue.

Circuit Testing and Electrical Diagnostics

The MK808S handles OBD-based electrical diagnostics well — reading sensor voltages, monitoring live data streams, checking circuit integrity through the vehicle's own systems. But it's not a standalone continuity tester or auto circuit tester. You still need dedicated tools for hands-on electrical work.

This is where things get interesting for anyone doing proper fault-finding. A diagnostic scanner tells you what's wrong. A continuity circuit tester or voltage and continuity tester tells you where the fault actually lives in the wiring. You need both.

Pairing the MK808S with Electrical Test Tools

My workflow goes like this: scan with the Autel, identify the fault code, then grab a car electric circuit tester to trace the actual wiring issue. For checking earths, signal wires, and broken connections, a decent electrical continuity tester is non-negotiable. The Fluke T150 is brilliant for this — proper Fluke continuity tester quality with CAT III 690V rating.

For automotive-specific work, a dedicated auto electrical circuit tester that handles 6–24V systems gives you power testing, ground testing, and continuity in one probe. Much faster than messing about with a standard multimeter when you're under the dashboard. If you're unsure about how to find a short circuit in a car, having the right combination of scan tool and circuit tester makes the job dramatically easier., meeting British quality expectations

The Megger continuity tester range is worth mentioning too — overkill for automotive, but if you're also doing domestic electrical work, they're the industry standard. Compliant with BSI standards for electrical testing equipment, which matters if you're doing anything that needs signing off.

Real-World Performance: My Experience with the Autel MK808S

I've had mine since early 2025. Used it on everything from a 2008 Ford Focus with a dodgy ABS module to a 2023 BMW 1 Series that needed a service reset after an independent oil change. It handled both without drama.

Boot time is around 25 seconds. Not instant, but acceptable. The OBD cable is decent quality — thick, with a solid connector that doesn't wobble in the port. I've seen cheaper Autel OBD scanners where the cable feels like it'll snap after six months. Not the case here.

What It Does Well

DPF regeneration on Ford TDCi engines — sorted first time, every time. Oil service resets on VAG cars without needing VCDS. Reading live data at 4 PIDs simultaneously with graphing. The graphing isn't fancy, but it's functional enough to spot a lazy O2 sensor or a misfiring injector pattern.

Look, I know the price seems steep compared to a £30 Bluetooth reader. But the time it saves pays for itself within a month if you're working on cars regularly. My mate runs a mobile mechanic business out of Dundonald and he reckons it's saved him 3–4 dealer referrals per month. At £80+ per diagnostic session, that's real money back in his pocket.

Where It Falls Short

Well, actually — the annual update subscription is the sore point. After your first free year, Autel UK charges around £150–£199 per year for continued updates. Miss a year and you lose access to newer vehicle profiles. It's the industry model now, but it still stings. The Which? consumer guides have flagged subscription costs as a growing concern across diagnostic tools, and rightly so.

The other limitation: no Bluetooth connectivity to the vehicle. It's wired only via the OBD cable. The MaxiSys range uses Bluetooth VCI adapters, which means you can walk around the car while monitoring live data. With the MK808S, you're tethered. Minor inconvenience, but worth knowing., popular across England

Autel PowerScan vs Power Probe: Which Circuit Tester Wins?

This comes up constantly in UK garage forums. The Autel PowerScan PS100 and the Power Probe III are the two dominant car circuit testers for automotive electrical work. Both do power injection, ground testing, and continuity — but they approach it differently.

The Autel PowerScan operates at 12–24V and includes an integrated AVOmeter function. The Power Probe III has been the industry standard for years and benefits from a massive accessory ecosystem. For a detailed breakdown, I've written a full Autel vs Power Probe comparison that covers the specifics.

Honestly, I've tried both. The Power Probe feels more premium in hand — better build quality on the tip and the switch mechanism. But the Autel gives you that integrated meter which saves carrying a separate voltage continuity tester. For pure bang for your buck, the PowerScan edges it. For longevity and brand ecosystem, Power Probe still has the edge.

Worth noting: both tools comply with automotive electrical safety standards. The HSE guidelines on electrical safety recommend using properly rated test equipment for any vehicle electrical work, particularly on hybrid and EV systems where voltages exceed standard 12V.

If you want to understand how these tools work in practice, there's a solid guide on testing car relays with a power probe that walks through the process step by step.

The Broader Autel Ecosystem in 2026

Autel isn't just scanners anymore. They've expanded into Autel drones (the EVO series competes directly with DJI), Autel key programmers like the KM100 and IM series, and ADAS calibration equipment. It's a proper technology company now, not just a scan tool brand.

For UK users, Autel Europe UK Ltd handles distribution and warranty support. Their UK operation has improved massively over the past two years — faster shipping, better technical support, and local firmware servers that don't crawl at update time. That said, the IM608 and MaxiSys Ultra are still specialist purchases that most people buy through authorised dealers rather than direct., with availability in Scotland

Autel Key Programming: KM100 vs IM508

Quick distinction here. The Autel KM100 is a standalone key generation tool — it creates universal keys and remotes but doesn't program them to vehicles. The Autel IM508 is a full IMMO programmer that handles key learning, all-keys-lost scenarios, and PIN reading on supported vehicles. Different tools, different jobs. Don't buy the KM100 thinking it'll program keys to cars. It won't.

Key Takeaways

• The Autel MK808S costs £349–£399 in the UK and delivers all-system diagnostics with 28 service functions — the strongest mid-range offering from Autel in 2026.
• It's an upgrade over the original MaxiCOM MK808, with a faster processor and better coverage for post-2020 vehicles, for roughly £50 more.
• Annual updates cost £150–£199 after the first free year — factor this into your total cost of ownership before buying.
• It doesn't replace dedicated circuit testing tools. Pair it with a proper continuity tester or auto circuit tester for complete electrical fault-finding.
• For key programming, look at the IM508 or IM608 instead. The MK808S handles basic IMMO reading but isn't a key programmer.
• The Autel PowerScan PS100 (£89–£109) offers better value than the Power Probe III for most UK mechanics, thanks to its integrated AVOmeter function.
• Bi-directional control requires stepping up to the MaxiSys range — if you need to command actuators or code modules, the MK808S won't cut it.