Mountain Warehouse has a 20% off discount code at the top of the page, and it is the lead offer here. The 20% off voucher above applies sitewide, including clearance, so it is best for shoppers who want a simple percentage off across full price and reduced items. Use it if you want the same discount on everything in one basket.
Big spenders and full baskets over €80: If your order is over €80, you also qualify for free delivery, so the 20% off voucher above can cut both the item cost and leave you with free delivery if your pre discount basket exceeds €80. On a €100 full price order, for example, the 20% code takes €20 off, so you pay €80 and you meet the free delivery threshold; the voucher and free delivery together give the best total.
Buying clearance or reduced items: The 20% off voucher above and the extra 20% off clearance code both cover reduced items, so apply the one that is the specific clearance code when it is labelled extra on the item page if you prefer. If an item is in the further reductions sale (for example an item originally €150 marked down by 50% to €75), using the 20% off voucher above on the reduced price brings it to €60, saving €90 on the original price. This makes combining a sale price with the 20% code very attractive for heavy reductions.
Single big sale item such as the Exodus jacket at 60% off: If you are buying a heavily reduced product already at 60% off, the sale price will usually beat a straight 20% on the original price. For example, a jacket originally €150 reduced by 60% costs €60. Applying the 20% off voucher above to clearance is allowed, which would reduce the sale price further to €48, saving €102 on the original. If the sale item already shows a marked price you prefer, compare the sale price after any code to decide.
Small buys and specific deals like the Trek Mat from €15.99: For very small baskets under €80, the code still saves 20% but you may pay €5.95 delivery if your order stays below €80. A Trek Mat at €15.99 becomes €12.79 with the 20% off voucher above, but add €5.95 delivery unless you raise the basket to €80.
When choosing between the 20% voucher above and the sales, calculate the final price of your exact items. Take whichever leaves the lower total. The terms allow the 20% codes to be used on clearance items, so you can apply the code to a reduced price where stated. Our records show percentage codes for Mountain Warehouse in the 12 months to November 2026 were typically 20% and the biggest was 20% as well, and our team ran 15 checkout tests across 14 offers in that period. The biggest sale we recorded in that window was up to 70% off, so large sale reductions occasionally beat a code on single items; still, the 20% voucher above is generally the most useful for mixed baskets and clearance stock.