Topdon makes a huge range of car computer tools, from simple $30 OBD2 scanners to full-featured diagnostic units (both Amazon links) worth more than three grand. The new Topdon One and One Lite are designed to be a middle ground for advanced DIYers and independent mechanics on a budget, offering key functions often reserved for dealership techs at a price point that’s a little more palatable for casuals.
The Topdon One (Amazon) only got listed on Amazon days ago, and just got a new-product promotional discount of 16%, bringing the asking price from $889 down to $749. The best price I’ve seen for the Topdon One Lite (eBay) so far is $599, on the brand’s official eBay store. If you do buy through eBay, try the discount code “T7EJCSB9” at checkout; it looks like that might be good for another $10 off.
Those coupons, and these sale prices, could expire by the time you read this, so you might want to hustle if you’re intrigued!
The Topdon One and One Lite are fundamentally quite similar—according to the spec sheets, both have the same:
The functional difference seems to be in the software: Topdon One can do a little more car-computer customization than Topdon One Lite. The Topdon One Lite lacks the full-fat One model’s “One-Click Customization” functions.
The Topdon One lets you tap into pre-configured coding shortcuts on modern vehicles. You can easily unlock “hidden” features or adjust comfort settings without having to do manual coding with that device. I’m talking about stuff like: Disabling the seatbelt chime, changing how the daytime running lights operate, enabling the ability to roll down windows with the key fob, or adjusting interior lighting options.
That stuff is fun, but not critical. And it usually mostly applies to German cars. So all that said, looks to me like Topdon One Lite is the money-saving move. If you really want to make custom coding tweaks later, you can always look into a much less expensive device like an OBDeleven.
Based on what I can see, Topdon One Lite can still perform high-level ECU coding for module replacements and component matching; it just lacks that user-friendly, one-click menu for tweaking those specific comfort and convenience features.
Here’s what makes both versions of this device compelling alternatives to more-expensive dealer tools.
If you read through this because you’re interested in grabbing another OBD2 scanner but don’t want to spend anywhere near $600, Topdon’s entry model, the ArtLink400 (JB Tools), offers a nice little colored screen and core functionality for less than $40. In fact, it’s on sale at JB Tools for $29.99 (20% off) right now. Could be worth picking up just to have as an extra.
Automotive journalist since 2013, Andrew primarily coordinates features, sponsored content, and multi-departmental initiatives at The Drive.