Recently,more and more people talk about this theme：which VAG Scanner is the best?Both Autel VAG505 scan tool and Foxwell NT500 is capable of performing OEM level diagnostic tool for most Volkswagen VW/ Audi/ Seat/ Skoda vehicles sold worldwide. Here's Compared Foxwell NT500 with Autel VAG505,it hopes to  help you .

Item	Foxwell NT500 VAG Scanner	Autel MaxiService VAG505 Scan Tool
Image
Brand	Original Foxwell	Original Autel
Language	English only	English only
System	Full system, engine, airbag, ABS, A/T, instrument cluster etc	Full system, engine, airbag, ABS, A/T, instrument cluster etc
Update/Cost	By SD Card/free update for 18 month, 60USD/year to update software	By TF card, one year free update online
Official website	http://www.foxwelltech.com/	http://www.auteltechh.com/
Support vehicle brand	VW/Audi/Seat/Skoda	VW/Audi/Seat/Skoda
Function	Read Codes, Erase Codes, Live Data, Freeze Frame, I/M Readiness, O2 Mon. Test, On-Board Mon. Test, Component Test and Vehicle Information, EPB, Resets oil service light, Retrieves ECU information, Resets the brake pad thickness after AUDI A8 service, Retracts calipers for brake pad replacement, Deactivates and re-activates brake control system, service interval	Read Codes, Erase Codes, Live Data, Freeze Frame, I/M Readiness, O2 Mon. Test, On-Board Mon. Test, Component Test and Vehicle Information
Support car year	Till 2016	1996-2005 around
Protocol	EU VW VAG UDS, US VW OBDII and OBDI	EU VW VAG UDS, US VW OBDII
Registration/Activation	NO	YES
Region	All regions	All regions
Price	US$169.00	US$105.00

Summary:

1.VAG505 cheaper than Foxwell NT500

2. Foxwell scanner works newer VAG models than Autel.

3. NT500 supports more special functions than VAG505.

4. Foxwell NT500 support both OBDII and OBDI US VAG cars.

5. NT500 works 90% function as original vag 5054a ODIS. Autel VAG505 cannot.

6. VAG NT500 performs exactly the same function as Foxwell GT80 Plus, but compatible with only 5 car software

Here's their  user  manual:

Foxwell NT500 VAG Scanner User Manual

Autel VAG 505 Code Reader Scanner User Manual

Add:Recen days our engineer use Foxwell NT500 and NT510 scanner tested  on diesel cars

Result:NO issues!
http://www.foxwellsupport.com/autel-vag505-and-foxwell-nt500/