A realistic engine replacement cost for a Defender 110 in 2026 can vary depending on the engine type and condition, but you’re typically looking at anywhere between £3,000 to £7,000 in the UK. In many cases, a rebuild can be a more cost-effective option if the engine is still repairable. If you’re comparing options, it’s always worth checking trusted providers offering engine rebuilds near me to see whether rebuilding or replacement gives you better long-term value.