Medium Diet Coke Price at McDonald's (2026)
A Medium Diet Coke at McDonald's in Ireland is priced at €4.2 as of October 2026.
A Medium Diet Coke® at McDonald's costs €4.20 in Ireland as of October 2026. That's about 0% above the typical McDonald's drink item — the 7th-most-expensive of 17 we track. It's available at around 73 McDonald's locations across Ireland. Prices are sourced from delivery platforms and refreshed regularly. Check the full McDonald's menu or compare drink prices on MenuPriceToday.
How this compares in Drinks
17 items tracked| This item | €4.20 |
| Drinks median | €4.20 |
| Cheapest — Fresh Irish Low Fat Milk | €2.25 |
| Most expensive — Frozen Strawberry Lemonade | €5.30 |
| vs Drinks median | 0% |
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