Where was the UM23M number plate registered?

Vehicles with the UM23M prefix were first registered in the UK through official DVLA regional allocation tag UM.

What year was a UM23M registration plate released?

The UM23M series was issued during March 2023 to August 2023.

What is the MOT pass rate for UM23M vehicles?

Vehicles in the UM23M cohort demonstrate an average historical MOT pass rate of 100% based on 1 recorded DVSA inspections.

Batch Prefix Hub

UM23M Series Number Plates

UK vehicles during March 2023 to August 2023 with registration prefix UM23M.

Area Office: DVLA Region (UM)
Release Period: March 2023 to August 2023
Tracked in Batch: 2 vehicles
MOT Pass Rate: 100%

Popular Makes

ALFA ROMEO 50% (1)

MERCEDES-BENZ 50% (1)

100%

Average MOT Pass Rate

Based on 1 historical tests

Common Colors

GREY2 vehicles

Active Plates in UM23M Series(2 of 2 displayed)

Filter by 6th Letter:

UM23MAH

TaxedMOT Expired

MERCEDES-BENZ CLA 200 AMG LN PREM + MHEV A

1.3L · HYBRID ELECTRIC · GREY

First Used: May 2025
MOT Expiry: —
Tax Status: Taxed
Color: GREY

Check History & Specs

UM23MER

TaxedMOT Valid

ALFA ROMEO TONALE TI TB MHEV S-A

1.5L · HYBRID ELECTRIC · GREY

First Used: May 2023
MOT Expiry: 23 May 2027
Tax Status: Taxed
Color: GREY

Check History & Specs

Reliability & Common Problem Guides for UM23M Makes

Explore common mechanical faults, MOT advisory trends, and recall notices for popular vehicles in this registration batch:

ALFA ROMEO Common Problems MERCEDES-BENZ Common Problems

Frequently Asked Questions about UM23M Plates

Where was the UM23M number plate series registered?

Vehicles starting with UM23M were assigned to the DVLA regional office covering the UK. The first two letters (UM) identify the memory tag assigned by the DVLA.

What registration period is UM23M?

The UM23M age identifier corresponds to vehicles first registered between March 2023 to August 2023.

How can I check the MOT history of a UM23M vehicle?

Click any registration in the plate list above to view the complete DVSA inspection history, advisory alerts, mileage progression, road tax status, and our AI mechanical risk evaluation.