diff --git a/README.md b/README.md
index 062d268a0c..bccfdfc990 100644
--- a/README.md
+++ b/README.md
@@ -173,6 +173,7 @@ Community Maintained Cars and Features
 | Nissan    | Rogue 2018-20                 | ProPILOT          | Stock            | 0mph               | 0mph         |
 | Nissan    | X-Trail 2017                  | ProPILOT          | Stock            | 0mph               | 0mph         |
 | SEAT      | Ateca 2018                    | Driver Assistance | Stock            | 0mph               | 0mph         |
+| SEAT      | Leon 2020                     | Driver Assistance | Stock            | 0mph               | 0mph         |
 | Škoda     | Kodiaq 2018                   | Driver Assistance | Stock            | 0mph               | 0mph         |
 | Škoda     | Octavia 2015, 2019            | Driver Assistance | Stock            | 0mph               | 0mph         |
 | Škoda     | Scala 2020                    | Driver Assistance | Stock            | 0mph               | 0mph         |
diff --git a/RELEASES.md b/RELEASES.md
index 5dbf50b181..b1dd47e773 100644
--- a/RELEASES.md
+++ b/RELEASES.md
@@ -4,6 +4,7 @@ Version 0.8.5 (2021-XX-XX)
  * Smart model-based Forward Collision Warning
  * Hyundai Elantra 2021 support thanks to CruiseBrantley!
  * Lexus UX Hybrid 2019 support thanks to brianhaugen2!
+ * SEAT Leon 2020 support thanks to jyoung8607!
  * Škoda Octavia 2015 & 2019 support thanks to jyoung8607!
 
 Version 0.8.4 (2021-05-17)
diff --git a/selfdrive/car/volkswagen/interface.py b/selfdrive/car/volkswagen/interface.py
index e6a1971a14..c2a4a05a1d 100644
--- a/selfdrive/car/volkswagen/interface.py
+++ b/selfdrive/car/volkswagen/interface.py
@@ -92,6 +92,11 @@ class CarInterface(CarInterfaceBase):
       ret.mass = 1900 + STD_CARGO_KG
       ret.wheelbase = 2.64
 
+    elif candidate == CAR.SEAT_LEON_MK3:
+      # Averages of all 5F Leon variants
+      ret.mass = 1227 + STD_CARGO_KG
+      ret.wheelbase = 2.64
+
     elif candidate == CAR.SKODA_KODIAQ_MK1:
       # Averages of all 5N Kodiaq variants
       ret.mass = 1569 + STD_CARGO_KG
diff --git a/selfdrive/car/volkswagen/values.py b/selfdrive/car/volkswagen/values.py
index b74f91fbe8..5ded530d44 100644
--- a/selfdrive/car/volkswagen/values.py
+++ b/selfdrive/car/volkswagen/values.py
@@ -53,6 +53,7 @@ MQB_LDW_MESSAGES = {
 # Check the 7th and 8th characters of the VIN before adding a new CAR. If the
 # chassis code is already listed below, don't add a new CAR, just add to the
 # FW_VERSIONS for that existing CAR.
+# Exception: SEAT Leon and SEAT Ateca share a chassis code
 
 class CAR:
   ATLAS_MK1 = "VOLKSWAGEN ATLAS 1ST GEN"      # Chassis CA, Mk1 VW Atlas and Atlas Cross Sport
@@ -62,6 +63,7 @@ class CAR:
   TIGUAN_MK2 = "VOLKSWAGEN TIGUAN 2ND GEN"    # Chassis AD/BW, Mk2 VW Tiguan and variants
   AUDI_A3_MK3 = "AUDI A3 3RD GEN"             # Chassis 8V/FF, Mk3 Audi A3 and variants
   SEAT_ATECA_MK1 = "SEAT ATECA 1ST GEN"       # Chassis 5F, Mk1 SEAT Ateca and CUPRA Ateca
+  SEAT_LEON_MK3 = "SEAT LEON 3RD GEN"         # Chassis 5F, Mk3 SEAT Leon and variants
   SKODA_KODIAQ_MK1 = "SKODA KODIAQ 1ST GEN"   # Chassis NS, Mk1 Skoda Kodiaq
   SKODA_SCALA_MK1 = "SKODA SCALA 1ST GEN"     # Chassis NW, Mk1 Skoda Scala and Skoda Kamiq
   SKODA_SUPERB_MK3 = "SKODA SUPERB 3RD GEN"   # Chassis 3V/NP, Mk3 Skoda Superb and variants
@@ -327,6 +329,23 @@ FW_VERSIONS = {
       b'\xf1\x872Q0907572M \xf1\x890233',
     ],
   },
+  CAR.SEAT_LEON_MK3: {
+    (Ecu.engine, 0x7e0, None): [
+      b'\xf1\x8705E906018AS\xf1\x899596',
+    ],
+    (Ecu.transmission, 0x7e1, None): [
+      b'\xf1\x870CW300050J \xf1\x891908',
+    ],
+    (Ecu.srs, 0x715, None): [
+      b'\xf1\x873Q0959655CM\xf1\x890720\xf1\x82\0161312001313001305171311052900',
+    ],
+    (Ecu.eps, 0x712, None): [
+      b'\xf1\x875Q0909144AB\xf1\x891082\xf1\x82\00521N01342A1',
+    ],
+    (Ecu.fwdRadar, 0x757, None): [
+      b'\xf1\x875Q0907572P \xf1\x890682',
+    ],
+  },
   CAR.SKODA_KODIAQ_MK1: {
     (Ecu.engine, 0x7e0, None): [
       b'\xf1\x8704E906027DD\xf1\x893123',
@@ -427,6 +446,7 @@ DBC = {
   CAR.TIGUAN_MK2: dbc_dict('vw_mqb_2010', None),
   CAR.AUDI_A3_MK3: dbc_dict('vw_mqb_2010', None),
   CAR.SEAT_ATECA_MK1: dbc_dict('vw_mqb_2010', None),
+  CAR.SEAT_LEON_MK3: dbc_dict('vw_mqb_2010', None),
   CAR.SKODA_KODIAQ_MK1: dbc_dict('vw_mqb_2010', None),
   CAR.SKODA_OCTAVIA_MK3: dbc_dict('vw_mqb_2010', None),
   CAR.SKODA_SCALA_MK1: dbc_dict('vw_mqb_2010', None),
diff --git a/selfdrive/test/test_routes.py b/selfdrive/test/test_routes.py
index 8a05704cda..024562e750 100755
--- a/selfdrive/test/test_routes.py
+++ b/selfdrive/test/test_routes.py
@@ -131,6 +131,7 @@ routes = [
   TestRoute("2cef8a0b898f331a|2021-03-25--20-13-57", VOLKSWAGEN.TIGUAN_MK2),
   TestRoute("07667b885add75fd|2021-01-23--19-48-42", VOLKSWAGEN.AUDI_A3_MK3),
   TestRoute("8f205bdd11bcbb65|2021-03-26--01-00-17", VOLKSWAGEN.SEAT_ATECA_MK1),
+  TestRoute("fc6b6c9a3471c846|2021-05-27--13-39-56", VOLKSWAGEN.SEAT_LEON_MK3),
   TestRoute("90434ff5d7c8d603|2021-03-15--12-07-31", VOLKSWAGEN.SKODA_KODIAQ_MK1),
   TestRoute("66e5edc3a16459c5|2021-05-25--19-00-29", VOLKSWAGEN.SKODA_OCTAVIA_MK3),
   TestRoute("026b6d18fba6417f|2021-03-26--09-17-04", VOLKSWAGEN.SKODA_SCALA_MK1),