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Sat Navs (Garmin/TomTom) ✓ Verified Compatibility • Last checked: October 2026

Best Memory Card or USB for TomTom Start 25 / 42 / 52 / 62 & Via Sat Nav

Format: 32GB microSD / SD Card Max Capacity: 32GB Best Size: 32GB Min Speed: Class 10
TomTom Start 25 / 42 / 52 / 62 & Via Sat Nav compatible slot illustration
✓ Quick Answer: Get a 32GB SanDisk Ultra card (Do NOT buy 64GB or larger).
Good to know: Garmin, TomTom, and truck Sat Navs reject 64GB and 128GB cards. A 32GB card works straight out of the packet for map updates with zero setup.
⏱ How much does it hold? 32GB ≈ Holds full UK & All-Europe map updates + speed camera databases with 15GB+ to spare Full size chart →
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⭐ Recommended (Plug & Play FAT32) £ • Budget Plug & Play
32GB SanDisk Ultra microSD / SD Card

32GB SanDisk Ultra microSD / SD Card

Format / TypemicroSDHC / SDHC (FAT32)
Speed ClassClass 10 / U1 (FAT32)
Speed Rating120 MB/s Read • Pre-Formatted FAT32
EnduranceStandard Plug & Play
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Official Specifications, Formatting & Manual Source

Max Official Capacity: 32GB (Tested up to 32GB (Plug & Play))

Setup / Formatting: FAT32 (32GB cards come pre-formatted in FAT32)

Minimum Speed Class: Class 10

Technical Note: 64GB+ cards ship formatted in exFAT, which Garmin Express and TomTom MyDrive cannot read.

📋 Official Spec / Manual Source: TomTom Official Support — Compatible Memory Cards for Map Updates ↗

Need help formatting or fixing an error? See our guides for Windows 10/11, Mac, Dashcam/Camera Card Error Fix, or Garmin Card Degraded Fix.

Frequently Asked Questions: TomTom Start 25 / 42 / 52 / 62 & Via Sat Nav

What memory card or USB stick do I need for TomTom Start 25 / 42 / 52 / 62 & Via Sat Nav?

Get a 32GB SanDisk Ultra card (Do NOT buy 64GB or larger). TomTom Start 25 / 42 / 52 / 62 & Via Sat Nav uses a 32GB microSD / SD Card rated Class 10. Garmin, TomTom, and truck Sat Navs reject 64GB and 128GB cards. A 32GB card works straight out of the packet for map updates with zero setup.

What is the maximum SD card or USB size supported by TomTom Start 25 / 42 / 52 / 62 & Via Sat Nav?

The official maximum supported capacity for TomTom Start 25 / 42 / 52 / 62 & Via Sat Nav is 32GB (tested up to 32GB (Plug & Play)). For the best balance of price and reliability, our recommended sweet-spot size is 32GB.

How much video or how many photos will a card hold in TomTom Start 25 / 42 / 52 / 62 & Via Sat Nav?

32GB ≈ Holds full UK & All-Europe map updates + speed camera databases with 15GB+ to spare. Choosing 32GB gives plenty of headroom without overpaying.

Can I use a cheaper or slower card with TomTom Start 25 / 42 / 52 / 62 & Via Sat Nav?

95% of Sat Nav 'Card Not Recognized' issues happen because someone bought a 64GB+ card. Stick to 32GB! 64GB+ cards ship formatted in exFAT, which Garmin Express and TomTom MyDrive cannot read.

How should I format the memory card or USB stick for TomTom Start 25 / 42 / 52 / 62 & Via Sat Nav?

Setup requirement: FAT32 (32GB cards come pre-formatted in FAT32). 32GB cards come factory pre-formatted in FAT32, so you can insert the card straight out of the packet into TomTom Start 25 / 42 / 52 / 62 & Via Sat Nav with zero computer formatting needed.

Does the memory card brand matter for TomTom Start 25 / 42 / 52 / 62 & Via Sat Nav?

Yes. Unbranded or counterfeit marketplace cards frequently spoof their capacity or fail to sustain Class 10 write speeds, leading to corrupted recordings or 'Card Error' warnings. Stick to genuine, branded cards from a reputable retailer to ensure full manufacturer warranty coverage.

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