diff --git a/src/sequence-number.js b/src/sequence-number.js
index bd9084e..603e986 100644
--- a/src/sequence-number.js
+++ b/src/sequence-number.js
@@ -1,3 +1,5 @@
+const isLetter = input => !/^\d/.test(input)
+
 const getName = input => {
   switch (input) {
     case 'A':
@@ -20,7 +22,7 @@ const getName = input => {
 module.exports = input => {
   let name = null
 
-  if (Number.isNaN(input[0])) {
+  if (isLetter(input[0])) {
     name = getName(input[0])
     input = input.slice(1)
   }
diff --git a/test/model-3.js b/test/model-3.js
index 5d10c3f..f962c04 100644
--- a/test/model-3.js
+++ b/test/model-3.js
@@ -23,3 +23,7 @@ test('Tesla Model 3 Long Range AWD 2019', t => {
 test('Tesla Model 3 Performance 2019', t => {
   t.snapshot(vinDecoder('5YJ3F7EB3KF438661'))
 })
+
+test('Tesla Model 3 Long Range AWD 2020', t => {
+  t.snapshot(vinDecoder('5YJ3E1EB7LF788019'))
+})
diff --git a/test/model-s.js b/test/model-s.js
index 77b90ba..9e7444a 100644
--- a/test/model-s.js
+++ b/test/model-s.js
@@ -4,6 +4,10 @@ const test = require('ava')
 
 const vinDecoder = require('../src')
 
+test('Tesla Model S 85 2012', t => {
+  t.snapshot(vinDecoder('5YJSA1DN6CFS00937'))
+})
+
 test('Tesla Model S 75D 2018', t => {
   t.snapshot(vinDecoder('5YJSA7E29JF250011'))
 })
diff --git a/test/snapshots/model-3.js.md b/test/snapshots/model-3.js.md
index 76b3af5..c12d484 100644
--- a/test/snapshots/model-3.js.md
+++ b/test/snapshots/model-3.js.md
@@ -133,3 +133,29 @@ Generated by [AVA](https://avajs.dev).
       worldManufacturingIdentifier: 'Fremont, California',
       year: 2019,
     }
+
+## Tesla Model 3 Long Range AWD 2020
+
+> Snapshot 1
+
+    {
+      bateryType: 'Nickel Manganese Cobalt (NMC)',
+      bodyType: 'Sedan 4 DR / LHD',
+      model: 'Tesla Model 3',
+      motor: 'Dual Motor Standard',
+      photos: [
+        'https://teslahunt.github.io/tesla-vin/images/3/1.jpeg',
+        'https://teslahunt.github.io/tesla-vin/images/3/2.jpeg',
+        'https://teslahunt.github.io/tesla-vin/images/3/3.jpeg',
+        'https://teslahunt.github.io/tesla-vin/images/3/4.jpeg',
+        'https://teslahunt.github.io/tesla-vin/images/3/5.jpeg',
+      ],
+      plantOfManufacture: 'Tesla Fremont, California (USA)',
+      restraintSystems: 'Type 2 Manual seat belts (FR, SR*3) with front Airbags, PODS, side Inflatable restraints, Knee Airbags',
+      sequenceNumber: {
+        name: null,
+        value: 788019,
+      },
+      worldManufacturingIdentifier: 'Fremont, California',
+      year: 2020,
+    }
diff --git a/test/snapshots/model-3.js.snap b/test/snapshots/model-3.js.snap
index 0facfdd..7ed8d59 100644
Binary files a/test/snapshots/model-3.js.snap and b/test/snapshots/model-3.js.snap differ
diff --git a/test/snapshots/model-s.js.md b/test/snapshots/model-s.js.md
index ab601e5..4aaa731 100644
--- a/test/snapshots/model-s.js.md
+++ b/test/snapshots/model-s.js.md
@@ -4,6 +4,30 @@ The actual snapshot is saved in `model-s.js.snap`.
 
 Generated by [AVA](https://avajs.dev).
 
+## Tesla Model S 85 2012
+
+> Snapshot 1
+
+    {
+      bateryType: 'Nickel Manganese Cobalt (NMC)',
+      bodyType: '5 door Hatchback LHD RWD',
+      model: 'Tesla Model S',
+      motor: 'Base A/C Motor, Tier 7 battery (81-90 kWh)',
+      photos: [
+        'https://teslahunt.github.io/tesla-vin/images/S/1.jpeg',
+        'https://teslahunt.github.io/tesla-vin/images/S/2.jpeg',
+        'https://teslahunt.github.io/tesla-vin/images/S/3.jpeg',
+      ],
+      plantOfManufacture: 'Tesla Fremont, California (USA)',
+      restraintSystems: 'manual Type 2 USA seat belts, dual front airbags, front/rear side airbags, knee airbags',
+      sequenceNumber: {
+        name: 'Signature Series',
+        value: 937,
+      },
+      worldManufacturingIdentifier: 'Fremont, California',
+      year: 2012,
+    }
+
 ## Tesla Model S 75D 2018
 
 > Snapshot 1
@@ -46,8 +70,8 @@ Generated by [AVA](https://avajs.dev).
       plantOfManufacture: 'Tesla Fremont, California (USA)',
       restraintSystems: 'manual Type 2 USA seat belts, dual front airbags, front/rear side airbags, knee airbags',
       sequenceNumber: {
-        name: null,
-        value: NaN,
+        name: 'Production',
+        value: 10148,
       },
       worldManufacturingIdentifier: 'Fremont, California',
       year: 2013,
diff --git a/test/snapshots/model-s.js.snap b/test/snapshots/model-s.js.snap
index 2b35a69..715fd0e 100644
Binary files a/test/snapshots/model-s.js.snap and b/test/snapshots/model-s.js.snap differ