Medium Diet Coke Price at McDonald's (2026)
A Medium Diet Coke at McDonald's in Ireland is priced at €4.2 as of September 2026.
A Medium Diet Coke® at McDonald's costs €4.20 in Ireland as of September 2026. That's about 0% above the typical McDonald's drink item — the 6th-most-expensive of 16 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
16 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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