How deep do you want to go? Each level does more — and here's the part nobody tells you: what a tool can do depends on the adapter AND the app together, not just the dongle. Buy for where you're headed so you're not re-buying.
1
Generic — the basics
$15–40
Engine and emissions codes, live data, readiness monitors. Clears engine codes on non-gateway vehicles. This is what STEVE reads today.
Tools: Any decent ELM327 — Vgate vLinker, OBDLink LX, Veepeak.
On a gateway vehicle it still reads, but can't clear.
2
All-system read & clear
$100–140
Reads AND clears codes from every module — ABS, airbag/SRS, transmission, body — on a lot of makes. The BlueDriver-style all-rounder.
Tools: BlueDriver, or OBDLink MX+ with its enhanced add-ons. The MX+ is the pick if you want to grow — it also runs the make-specific apps below.
Coverage depth varies by make and model — check yours.
3
Make-specific coding — budget power
same adapter + an app
Same MX+/EX adapter, but a specialist app unlocks deep coding and service functions for one brand on the cheap — DRLs, retrofits, resets.
Tools: FORScan (Ford/Lincoln/Mazda), AlfaOBD (Chrysler/Dodge/Jeep/Ram/Fiat/Alfa), OBDeleven or VCDS (VW/Audi), BimmerCode (BMW/Mini). For FORScan, the USB OBDLink EX is the most reliable.
How a capable DIYer codes a single make without a $1,500 tablet.
4
Bidirectional + gateway — pro level
$300–2,000
Active tests, actuations, relearns, coding across all makes, and authorized access through security gateways.
Tools: Autel and Launch are the best value and often match the big names. Snap-on works and is user-friendly but you pay for the badge. Topdon has a growing following — some list FCA AutoAuth built in.
On Stellantis gateway vehicles, add AutoAuth (~$50/yr) on top — see Gateway Access.
💡 STEVE'S TAKE
One good Level 2 adapter that also runs Level 3 apps (the OBDLink MX+) covers most people for years and beats owning three cheap ones. Only step up to Level 4 if you need actuations, relearns, or gateway coding. We don't sell any of these and make nothing on them.
Not sure what YOUR vehicle needs? Ask STEVE →
Coverage varies by exact make, model and year. Confirm a tool supports your vehicle before buying. Prices are ballpark.