diff --git a/Helper/GasHelper.cs b/Helper/GasHelper.cs
index d564cf2..a7c340f 100644
--- a/Helper/GasHelper.cs
+++ b/Helper/GasHelper.cs
@@ -57,6 +57,10 @@ namespace CarCareTracker.Helper
                 if (i > 0)
                 {
                     var deltaMileage = currentObject.Mileage - previousMileage;
+                    if (deltaMileage < 0)
+                    {
+                        deltaMileage = 0;
+                    }
                     var gasRecordViewModel = new GasRecordViewModel()
                     {
                         Id = currentObject.Id,
diff --git a/Logic/OdometerLogic.cs b/Logic/OdometerLogic.cs
index d9db83a..6ef3a12 100644
--- a/Logic/OdometerLogic.cs
+++ b/Logic/OdometerLogic.cs
@@ -33,6 +33,10 @@ namespace CarCareTracker.Logic
         }
         public bool AutoInsertOdometerRecord(OdometerRecord odometer)
         {
+            if (odometer.Mileage == default)
+            {
+                return false;
+            }
             var lastReportedMileage = GetLastOdometerRecordMileage(odometer.VehicleId, new List<OdometerRecord>());
             odometer.InitialMileage = lastReportedMileage != default ? lastReportedMileage : odometer.Mileage;
 
diff --git a/Views/Vehicle/_CollisionRecordModal.cshtml b/Views/Vehicle/_CollisionRecordModal.cshtml
index 7e16212..45dd385 100644
--- a/Views/Vehicle/_CollisionRecordModal.cshtml
+++ b/Views/Vehicle/_CollisionRecordModal.cshtml
@@ -24,7 +24,7 @@
                     </div>
                     <label for="collisionRecordMileage">@translator.Translate(userLanguage, "Odometer")</label>
                     <div class="input-group">
-                        <input type="number" inputmode="numeric" id="collisionRecordMileage" class="form-control" placeholder="@translator.Translate(userLanguage,"Odometer reading when repaired")" value="@(isNew ? "" : Model.Mileage)">
+                        <input type="number" inputmode="numeric" id="collisionRecordMileage" class="form-control" placeholder="@translator.Translate(userLanguage,"Odometer reading when repaired")" value="@(isNew || Model.Mileage == default ? "" : Model.Mileage)">
                         @if (isNew)
                         {
                             <div class="input-group-text">
diff --git a/Views/Vehicle/_CollisionRecords.cshtml b/Views/Vehicle/_CollisionRecords.cshtml
index e195712..18e66d4 100644
--- a/Views/Vehicle/_CollisionRecords.cshtml
+++ b/Views/Vehicle/_CollisionRecords.cshtml
@@ -123,7 +123,7 @@
                 {
                     <tr class="d-flex user-select-none" style="cursor:pointer;" onmouseup="stopEvent()" ontouchstart="detectRowLongTouch(this)" ontouchend="detectRowTouchEndPremature(this)" data-rowId="@collisionRecord.Id" oncontextmenu="showTableContextMenu(this)" onmousemove="rangeMouseMove(this)" onclick="handleTableRowClick(this, showEditCollisionRecordModal,@collisionRecord.Id)" data-tags='@string.Join(" ", collisionRecord.Tags)'>
                         <td class="col-2 col-xl-1 flex-grow-1" data-column="date" data-date="@StaticHelper.GetEpochFromDateTime(collisionRecord.Date)">@collisionRecord.Date.ToShortDateString()</td>
-                        <td class="col-2 flex-grow-1 flex-shrink-1" data-column="odometer">@collisionRecord.Mileage</td>
+                        <td class="col-2 flex-grow-1 flex-shrink-1" data-column="odometer">@(collisionRecord.Mileage == default ? "---" : collisionRecord.Mileage.ToString())</td>
                         <td class="col-3 col-xl-4 flex-grow-1 flex-shrink-1" data-column="description">@collisionRecord.Description</td>
                         <td class="col-2 flex-grow-1 flex-shrink-1" data-column="cost" data-record-type="cost">@((hideZero && collisionRecord.Cost == default) ? "---" : collisionRecord.Cost.ToString("C"))</td>
                         <td class="col-3 flex-grow-1 flex-shrink-1 text-truncate" data-column="notes">@CarCareTracker.Helper.StaticHelper.TruncateStrings(collisionRecord.Notes)</td>
diff --git a/Views/Vehicle/_Gas.cshtml b/Views/Vehicle/_Gas.cshtml
index 321d468..0c0e0e3 100644
--- a/Views/Vehicle/_Gas.cshtml
+++ b/Views/Vehicle/_Gas.cshtml
@@ -190,7 +190,7 @@
                 {
                     <tr class="d-flex user-select-none" style="cursor:pointer;" onmouseup="stopEvent()" ontouchstart="detectRowLongTouch(this)" ontouchend="detectRowTouchEndPremature(this)" data-rowId="@gasRecord.Id" oncontextmenu="showTableContextMenu(this)" onmousemove="rangeMouseMove(this)" onclick="handleTableRowClick(this, showEditGasRecordModal,@gasRecord.Id)" data-tags='@string.Join(" ", gasRecord.Tags)'>
                         <td class="col-2 flex-grow-1" data-column="daterefueled">@gasRecord.Date</td>
-                        <td class="col-2 flex-grow-1 flex-shrink-1" data-column="odometer" data-gas-type="mileage" data-gas-aggregate="@gasRecord.DeltaMileage" data-gas-original="@gasRecord.Mileage">@gasRecord.Mileage</td>
+                        <td class="col-2 flex-grow-1 flex-shrink-1" data-column="odometer" data-gas-type="mileage" data-gas-aggregate="@gasRecord.DeltaMileage" data-gas-original="@gasRecord.Mileage">@(gasRecord.Mileage == default ? "---" : gasRecord.Mileage.ToString())</td>
                         <td class="col-1 flex-grow-1 flex-shrink-1" data-column="delta">@(gasRecord.DeltaMileage == default ? "---" : gasRecord.DeltaMileage)</td>
                         <td class="col-2 flex-grow-1 flex-shrink-1" data-column="consumption" data-gas-type="consumption" data-gas-aggregate="@gasRecord.Gallons">@gasRecord.Gallons.ToString("F")</td>
                         <td class="col-3 flex-grow-1 flex-shrink-1" data-column="fueleconomy" data-gas-type="fueleconomy" data-aggregated='@(gasRecord.IncludeInAverage.ToString().ToLower())'>@(gasRecord.MilesPerGallon == 0 ? "---" : gasRecord.MilesPerGallon.ToString("F"))</td>
diff --git a/Views/Vehicle/_GasModal.cshtml b/Views/Vehicle/_GasModal.cshtml
index 1880bd4..c2ee3d1 100644
--- a/Views/Vehicle/_GasModal.cshtml
+++ b/Views/Vehicle/_GasModal.cshtml
@@ -53,7 +53,7 @@
                     </div>
                     <label for="gasRecordMileage">@($"{translator.Translate(userLanguage,"Odometer Reading")}({distanceUnit})")</label>
                     <div class="input-group">
-                        <input type="number" inputmode="numeric" id="gasRecordMileage" class="form-control" placeholder="@translator.Translate(userLanguage,"Odometer reading when refueled")" value="@(isNew ? "" : Model.GasRecord.Mileage)">
+                        <input type="number" inputmode="numeric" id="gasRecordMileage" class="form-control" placeholder="@translator.Translate(userLanguage,"Odometer reading when refueled")" value="@(isNew || Model.GasRecord.Mileage == default ? "" : Model.GasRecord.Mileage)">
                         @if (isNew)
                         {
                             <div class="input-group-text">
diff --git a/Views/Vehicle/_ServiceRecordModal.cshtml b/Views/Vehicle/_ServiceRecordModal.cshtml
index 749e1fa..af14e18 100644
--- a/Views/Vehicle/_ServiceRecordModal.cshtml
+++ b/Views/Vehicle/_ServiceRecordModal.cshtml
@@ -24,7 +24,7 @@
                     </div>
                     <label for="serviceRecordMileage">@translator.Translate(userLanguage, "Odometer")</label>
                     <div class="input-group">
-                        <input type="number" inputmode="numeric" id="serviceRecordMileage" class="form-control" placeholder="@translator.Translate(userLanguage,"Odometer reading when serviced")" value="@(isNew ? "" : Model.Mileage)">
+                        <input type="number" inputmode="numeric" id="serviceRecordMileage" class="form-control" placeholder="@translator.Translate(userLanguage,"Odometer reading when serviced")" value="@(isNew || Model.Mileage == default ? "" : Model.Mileage)">
                         @if (isNew)
                         {
                             <div class="input-group-text">
diff --git a/Views/Vehicle/_ServiceRecords.cshtml b/Views/Vehicle/_ServiceRecords.cshtml
index 596195f..fab3af9 100644
--- a/Views/Vehicle/_ServiceRecords.cshtml
+++ b/Views/Vehicle/_ServiceRecords.cshtml
@@ -123,7 +123,7 @@
                 {
                     <tr class="d-flex user-select-none" style="cursor:pointer;" onmouseup="stopEvent()" ontouchstart="detectRowLongTouch(this)" ontouchend="detectRowTouchEndPremature(this)" data-rowId="@serviceRecord.Id" oncontextmenu="showTableContextMenu(this)" onmousemove="rangeMouseMove(this)" onclick="handleTableRowClick(this, showEditServiceRecordModal,@serviceRecord.Id)" data-tags='@string.Join(" ", serviceRecord.Tags)'>
                         <td class="col-2 col-xl-1 flex-grow-1" data-column="date" data-date="@StaticHelper.GetEpochFromDateTime(serviceRecord.Date)">@serviceRecord.Date.ToShortDateString()</td>
-                        <td class="col-2 flex-grow-1 flex-shrink-1" data-column="odometer">@serviceRecord.Mileage</td>
+                        <td class="col-2 flex-grow-1 flex-shrink-1" data-column="odometer">@(serviceRecord.Mileage == default ? "---" : serviceRecord.Mileage.ToString())</td>
                         <td class="col-3 col-xl-4 flex-grow-1 flex-shrink-1" data-column="description">@serviceRecord.Description</td>
                         <td class="col-2 flex-grow-1 flex-shrink-1" data-column="cost" data-record-type="cost">@((hideZero && serviceRecord.Cost == default) ? "---" : serviceRecord.Cost.ToString("C"))</td>
                         <td class="col-3 text-truncate flex-grow-1 flex-shrink-1" data-column="notes">@CarCareTracker.Helper.StaticHelper.TruncateStrings(serviceRecord.Notes)</td>
diff --git a/Views/Vehicle/_UpgradeRecordModal.cshtml b/Views/Vehicle/_UpgradeRecordModal.cshtml
index c61456c..e7c3e1b 100644
--- a/Views/Vehicle/_UpgradeRecordModal.cshtml
+++ b/Views/Vehicle/_UpgradeRecordModal.cshtml
@@ -24,7 +24,7 @@
                     </div>
                     <label for="upgradeRecordMileage">@translator.Translate(userLanguage, "Odometer")</label>
                     <div class="input-group">
-                        <input type="number" inputmode="numeric" id="upgradeRecordMileage" class="form-control" placeholder="@translator.Translate(userLanguage,"Odometer reading when upgraded/modded")" value="@(isNew ? "" : Model.Mileage)">
+                        <input type="number" inputmode="numeric" id="upgradeRecordMileage" class="form-control" placeholder="@translator.Translate(userLanguage,"Odometer reading when upgraded/modded")" value="@(isNew || Model.Mileage == default ? "" : Model.Mileage)">
                         @if (isNew)
                         {
                             <div class="input-group-text">
diff --git a/Views/Vehicle/_UpgradeRecords.cshtml b/Views/Vehicle/_UpgradeRecords.cshtml
index 461a3a8..147c319 100644
--- a/Views/Vehicle/_UpgradeRecords.cshtml
+++ b/Views/Vehicle/_UpgradeRecords.cshtml
@@ -123,7 +123,7 @@
                 {
                     <tr class="d-flex user-select-none" style="cursor:pointer;" onmouseup="stopEvent()" ontouchstart="detectRowLongTouch(this)" ontouchend="detectRowTouchEndPremature(this)" data-rowId="@upgradeRecord.Id" oncontextmenu="showTableContextMenu(this)" onmousemove="rangeMouseMove(this)" onclick="handleTableRowClick(this, showEditUpgradeRecordModal,@upgradeRecord.Id)" data-tags='@string.Join(" ", upgradeRecord.Tags)'>
                         <td class="col-2 flex-grow-1 col-xl-1" data-column="date" data-date="@StaticHelper.GetEpochFromDateTime(upgradeRecord.Date)">@upgradeRecord.Date.ToShortDateString()</td>
-                        <td class="col-2 flex-grow-1 flex-shrink-1" data-column="odometer">@upgradeRecord.Mileage</td>
+                        <td class="col-2 flex-grow-1 flex-shrink-1" data-column="odometer">@(upgradeRecord.Mileage == default ? "---" : upgradeRecord.Mileage.ToString())</td>
                         <td class="col-3 flex-grow-1 flex-shrink-1 col-xl-4" data-column="description">@upgradeRecord.Description</td>
                         <td class="col-2 flex-grow-1 flex-shrink-1" data-column="cost" data-record-type="cost">@((hideZero && upgradeRecord.Cost == default) ? "---" : upgradeRecord.Cost.ToString("C"))</td>
                         <td class="col-3 flex-grow-1 flex-shrink-1 text-truncate" data-column="notes">@CarCareTracker.Helper.StaticHelper.TruncateStrings(upgradeRecord.Notes)</td>
diff --git a/wwwroot/js/collisionrecord.js b/wwwroot/js/collisionrecord.js
index 3431a5e..aa25b78 100644
--- a/wwwroot/js/collisionrecord.js
+++ b/wwwroot/js/collisionrecord.js
@@ -100,6 +100,9 @@ function getAndValidateCollisionRecordValues() {
     var collisionRecordId = getCollisionRecordModelData().id;
     var addReminderRecord = $("#addReminderCheck").is(":checked");
     //Odometer Adjustments
+    if (isNaN(collisionMileage)) {
+        collisionMileage = '0';
+    }
     collisionMileage = GetAdjustedOdometer(collisionRecordId, collisionMileage);
     //validation
     var hasError = false;
diff --git a/wwwroot/js/gasrecord.js b/wwwroot/js/gasrecord.js
index 0fa4e95..8089726 100644
--- a/wwwroot/js/gasrecord.js
+++ b/wwwroot/js/gasrecord.js
@@ -99,6 +99,9 @@ function getAndValidateGasRecordValues() {
     var vehicleId = GetVehicleId().vehicleId;
     var gasRecordId = getGasRecordModelData().id;
     //Odometer Adjustments
+    if (isNaN(gasMileage)) {
+        gasMileage = '0';
+    }
     gasMileage = GetAdjustedOdometer(gasRecordId, gasMileage);
     //validation
     var hasError = false;
diff --git a/wwwroot/js/planrecord.js b/wwwroot/js/planrecord.js
index 99c9127..07ccc27 100644
--- a/wwwroot/js/planrecord.js
+++ b/wwwroot/js/planrecord.js
@@ -287,7 +287,10 @@ function updatePlanRecordProgress(newProgress) {
                 showCancelButton: true,
                 focusConfirm: false,
                 preConfirm: () => {
-                    const odometer = $("#inputOdometer").val();
+                    var odometer = $("#inputOdometer").val();
+                    if (odometer.trim() == '') {
+                        odometer = '0';
+                    }
                     if (!odometer || isNaN(odometer)) {
                         Swal.showValidationMessage(`Please enter an odometer reading`)
                     }
diff --git a/wwwroot/js/servicerecord.js b/wwwroot/js/servicerecord.js
index d42a10b..62dc8a3 100644
--- a/wwwroot/js/servicerecord.js
+++ b/wwwroot/js/servicerecord.js
@@ -100,6 +100,9 @@ function getAndValidateServiceRecordValues() {
     var serviceRecordId = getServiceRecordModelData().id;
     var addReminderRecord = $("#addReminderCheck").is(":checked");
     //Odometer Adjustments
+    if (isNaN(serviceMileage)) {
+        serviceMileage = '0';
+    }
     serviceMileage = GetAdjustedOdometer(serviceRecordId, serviceMileage);
     //validation
     var hasError = false;
diff --git a/wwwroot/js/upgraderecord.js b/wwwroot/js/upgraderecord.js
index 6245cef..5bbe1fc 100644
--- a/wwwroot/js/upgraderecord.js
+++ b/wwwroot/js/upgraderecord.js
@@ -100,6 +100,9 @@ function getAndValidateUpgradeRecordValues() {
     var upgradeRecordId = getUpgradeRecordModelData().id;
     var addReminderRecord = $("#addReminderCheck").is(":checked");
     //Odometer Adjustments
+    if (isNaN(upgradeMileage)) {
+        upgradeMileage = '0';
+    }
     upgradeMileage = GetAdjustedOdometer(upgradeRecordId, upgradeMileage);
     //validation
     var hasError = false;