Research-based comparison: We have not hands-on tested these units. This page uses Autel first-party documentation plus current Amazon marketplace snapshots.
Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases.
Quick Answer
The Autel AL319 and AL329 are both basic OBD2/EOBD readers, so this is not a major capability-tier upgrade. Choose the AL319 if you want a proven basic reader with live PCM data and the lower current price. Choose the AL329 if its verified vehicle-information retrieval (VIN/CALID/CVN) and newer positioning matter to you. Neither should be bought for ABS, SRS, full-system, or bidirectional diagnostics.
Autel AL319 vs AL329
| Area | Autel AL319 | Autel AL329 |
|---|---|---|
| Product class | OBDII/CAN code reader | OBD2/EOBD handheld code reader |
| Generic/manufacturer-specific codes | Verified | Verified |
| Clear codes / MIL reset | Verified | Verified |
| I/M readiness | Verified | Verified |
| Freeze frame | Verified | Verified |
| Live PCM data | Verified | Not the differentiator in our AL329 evidence set |
| VIN / CALID / CVN retrieval | Not the differentiator in our AL319 evidence set | Verified |
| Enhanced modules | Not verified | Not verified |
| Current price snapshot* | $29.99 | $34.98 |
*Prices and availability can change.
Why Choose the Autel AL319?
The AL319 remains a straightforward value choice for engine/emissions OBD2 work. Autel verifies code retrieval/clearing, freeze frame, live PCM data, and readiness functions.
Check current Autel AL319 price on Amazon →
Why Choose the Autel AL329?
The AL329 covers the same basic OBD2 tier and adds clearly documented vehicle-information retrieval such as VIN, CALID, and CVN in the evidence set used here. That is useful, but it does not transform the AL329 into an enhanced-system scanner.
Check current Autel AL329 price on Amazon →
Is the AL329 Upgrade Worth It?
For most Check Engine and readiness work, the difference is modest. Buy the AL329 only if its specific workflow/details justify the small price premium. If you need ABS, SRS, battery testing, or broader diagnostics, skip both and move to a different product tier.
Bottom Line
AL319 = lower-cost basic OBD2 reader with verified live PCM data. AL329 = same basic tier with clearly verified VIN/CALID/CVN retrieval. Neither is an enhanced diagnostic scanner.
Methodology & Sources
We compared Autel’s first-party AL319 and AL329 product/support documentation and limited the table to verified facts. Manufacturer sources remain non-clickable research evidence. Amazon is used only for current listing and price snapshots.