AutoLine Pro Ventus
A cordless smoke machine for mobile techs and anyone tired of battery clamps. The flow meter and lifetime warranty help justify the price.
Amazon $229.99$229.99
The AutoLine Pro Ventus is the better automotive smoke machine overall, rated 3.2 to 2.9. The AutoLine Pro Ventus leads on warranty. The Foxwell ST203 wins on features. The Foxwell ST203 costs $30 less ($199.99 vs $229.99).
Prices were last checked November 9, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.
Foxwell ST203
A gauge-equipped machine for intake, turbo and exhaust leaks. Skip it if EVAP codes are the main job.
Amazon $199.99$199.99
Which should you buy?
- Choose the AutoLine Pro Ventus for warranty (lifetime warranty vs 1-year warranty).
- Choose the Foxwell ST203 for features (built-in air pump, air-only mode vs built-in air pump, runs on its own battery).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every no EVAP mode stated automotive smoke machine; a clear win is highlighted. How we rank explains each one.
| Factor weight | AutoLine Pro Ventus | Foxwell ST203 |
|---|---|---|
| Overall rating | 3.2/5 | 2.9/5 |
| Value 30% | 39 $229.99 | 44 $199.99 |
| Pressure coverage 25% | 50 pressure not published (neutral score used) | 43 up to 17.4 PSI |
| Measurement 20% | 40 flow meter | 40 pressure gauge |
| Features 15% | 40 built-in air pump, runs on its own battery | 50 built-in air pump, air-only mode |
| Warranty 10% | 100 lifetime warranty | 0 1-year warranty |
Specifications
| AutoLine Pro Ventus | Foxwell ST203 | |
|---|---|---|
| Pressure and smoke | ||
| EVAP mode | - | No |
| Output pressure | - | 11.6-17.4 PSI |
| Pressure display | - | Gauge |
| Flow meter | Yes | - |
| Air-only mode | - | Yes |
| Power and fluid | ||
| Air source | Built-in pump | Built-in pump |
| Power | Li-ion battery | 12V battery |
| Smoke fluid | maker fluid | mineral oil |
| In the box | ||
| Cap plugs | - | 23 pieces |
| Warranty | Lifetime | 1 year |