Warning: Nerdy-nerdnerdynerd thread So what you're looking at is Tesla's forward radars; AP1, AP2.0 and AP2.5 respectively. (OK, not 100% precise but close enough.) Radar - Autopilot hardware 1 and 2.0 (Bosch) Tesla Model S and X with Autopilot hardware 1 and 2.0 have a Bosch Mid-range radar sensor (MRR), Tesla part no. 1038224-00-B / 1057551-00-B (parts catalog link). Slight feature difference: Pre-Facelift AP1S has built in heating (leftmost picture), while Facelift AP1S, AP1X, AP2.0S and AP2.0X haven't because they're behind the front fascia (middle picture). Bosch MRR product datasheet. Feel free to google the part numbers - you'll get several eBay listings with nice pictures to look at Anyway, the Bosch radar is connected to the Autopilot ECU (i.e. the MobilEye EyeQ3 chip on AP1, and the Nvidia-PX2-based APE board on hw 2.0), with a single pair of canbus wiring ("CAN1+", "CAN1-"). Radar - Autopilot hardware 2.5 (Continental) Tesla Model 3, and S/X with Autopilot hardware 2.5 (built since ~August 2017), have a Continental ARS410 radar sensor. Tesla part no. 1108647-00-D. So I can't find any official product datasheets on "ARS410" specifically, but if you look closely at the white print on the actual radar itself (rightmost picture), you find "IC: 4135A-ARS4B". Here's the datasheet for ARS 4-B. I don't know how much this datasheet can be trusted though, because Continental's website boasts somewhat better specs on ARS410. Anyway, the Conti radar is connected to the Autopilot ECU with two pairs of canbus wiring ("CAN- Prim", "CAN+ Prim", "CAN- Sec" and "CAN+ Sec".) Spec comparison Now if I'm comparing the correct datasheets ( ), the Conti radar is: - much more accurate at speed measuring (+/- 0.1kph vs Bosch's +/- 0.11mps) - slightly longer detection range (170m vs Bosch's 160m) - slightly lighter (130g vs Bosch's 190g) - marginally less power consuption (4W vs Bosch's 4.5 w) Questions unanswered: - Why the dual canbus pairs on ARS410? Why not just two antennas on a single bus like MRR? - Continental "max objects detected"? - Cost difference? Weight in, fellow internet slaves!