diff --git a/lez/sequencer/core/metrics/src/record.rs b/lez/sequencer/core/metrics/src/record.rs
index 9a9b3f42..96b3304e 100644
--- a/lez/sequencer/core/metrics/src/record.rs
+++ b/lez/sequencer/core/metrics/src/record.rs
@@ -26,6 +26,14 @@ pub enum TxKind {
     ProgramDeployment,
 }
 
+/// Whether applying a transaction to the block's working state succeeded.
+#[derive(Debug, Clone, Copy, strum::IntoStaticStr, strum::EnumIter)]
+#[strum(serialize_all = "snake_case")]
+pub enum ApplyStatus {
+    Applied,
+    Failed,
+}
+
 impl From<common::transaction::TxKind> for TxKind {
     fn from(kind: common::transaction::TxKind) -> Self {
         match kind {
@@ -47,7 +55,11 @@ pub fn init() {
     drop(transactions_per_block_histogram());
     for origin in TransactionOrigin::iter() {
         for kind in TxKind::iter() {
-            drop(mempool_transaction_application_time_histogram(origin, kind));
+            for status in ApplyStatus::iter() {
+                drop(mempool_transaction_application_time_histogram(
+                    origin, kind, status,
+                ));
+            }
         }
     }
 }
@@ -107,6 +119,7 @@ pub fn record_mempool_max_size(size: usize) {
 fn mempool_transaction_application_time_histogram(
     origin: TransactionOrigin,
     kind: TxKind,
+    status: ApplyStatus,
 ) -> Histogram {
     histogram!(
         description: "Time taken to apply a mempool transaction",
@@ -114,15 +127,18 @@ fn mempool_transaction_application_time_histogram(
         names::MEMPOOL_TRANSACTION_APPLICATION_TIME,
         "origin" => <&'static str>::from(origin),
         "kind" => <&'static str>::from(kind),
+        "status" => <&'static str>::from(status),
     )
 }
 
 pub fn record_mempool_transaction_application_time(
     origin: TransactionOrigin,
     kind: TxKind,
+    status: ApplyStatus,
     duration: Duration,
 ) {
-    mempool_transaction_application_time_histogram(origin, kind).record(duration.as_secs_f64());
+    mempool_transaction_application_time_histogram(origin, kind, status)
+        .record(duration.as_secs_f64());
 }
 
 fn transactions_per_block_histogram() -> Histogram {
diff --git a/lez/sequencer/core/src/lib.rs b/lez/sequencer/core/src/lib.rs
index 77888b35..e38a19ca 100644
--- a/lez/sequencer/core/src/lib.rs
+++ b/lez/sequencer/core/src/lib.rs
@@ -902,16 +902,22 @@ impl<BP: BlockPublisherTrait> SequencerCore<BP> {
                 new_block_timestamp,
                 &mut withdrawals,
             );
-            sequencer_core_metrics::record_mempool_transaction_application_time(
-                origin.into(),
-                tx.kind().into(),
-                before_tx_apply.elapsed(),
-            );
-
             if applied {
+                sequencer_core_metrics::record_mempool_transaction_application_time(
+                    origin.into(),
+                    tx.kind().into(),
+                    sequencer_core_metrics::ApplyStatus::Applied,
+                    before_tx_apply.elapsed(),
+                );
                 valid_transactions.push(tx);
             } else {
                 sequencer_core_metrics::increment_mempool_failed_transactions_total();
+                sequencer_core_metrics::record_mempool_transaction_application_time(
+                    origin.into(),
+                    tx.kind().into(),
+                    sequencer_core_metrics::ApplyStatus::Failed,
+                    before_tx_apply.elapsed(),
+                );
                 // A failed transaction is simply left out of the block, except a
                 // dispatch: that one is re-fed from the store every turn, so one
                 // that can never execute would fail on every block for ever.
diff --git a/monitoring/grafana/dashboards/sequencer.json b/monitoring/grafana/dashboards/sequencer.json
index f9297c80..ede0ae4b 100644
--- a/monitoring/grafana/dashboards/sequencer.json
+++ b/monitoring/grafana/dashboards/sequencer.json
@@ -131,8 +131,8 @@
       "targets": [
         {
           "datasource": { "type": "prometheus", "uid": "prometheus" },
-          "expr": "histogram_quantile(${percentile}, sum by (le, kind, origin) (rate(mempool_transaction_application_time_seconds_bucket[$__rate_interval])))",
-          "legendFormat": "{{kind}} · {{origin}}",
+          "expr": "histogram_quantile(${percentile}, sum by (le, kind, origin, status) (rate(mempool_transaction_application_time_seconds_bucket[$__rate_interval])))",
+          "legendFormat": "{{kind}} · {{origin}} · {{status}}",
           "refId": "A"
         }
       ],
diff --git a/tools/dashboard_gen/src/dashboards/sequencer.rs b/tools/dashboard_gen/src/dashboards/sequencer.rs
index 2956edfa..0520251c 100644
--- a/tools/dashboard_gen/src/dashboards/sequencer.rs
+++ b/tools/dashboard_gen/src/dashboards/sequencer.rs
@@ -75,8 +75,8 @@ pub fn dashboard() -> Dashboard {
                     .unit(Unit::Seconds)
                     .target(selected_percentile(
                         sequencer_core_metrics::names::MEMPOOL_TRANSACTION_APPLICATION_TIME,
-                        &["kind", "origin"],
-                        "{{kind}} · {{origin}}",
+                        &["kind", "origin", "status"],
+                        "{{kind}} · {{origin}} · {{status}}",
                     )),
                 Panel::timeseries("Transactions per block")
                     .width(12)