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Used Ford Focus buying guide UK — Mk3 & Mk4 compared

The Ford Focus is the UK's most-traded used hatchback. It's been a top-5 seller every year since launch and a Focus rolls off the forecourt every 90 seconds somewhere in the UK. That ubiquity makes it both a safe purchase and a buyer's nightmare — there's a lot of bad ones in the pool. Here's how to find a good one.

SB Written by Salah Baaziz · Updated · Editorial standards

Ford Focus generations — Mk3 (2011-2018) vs Mk4 (2018+)

Mk3 (2011-2018) — Last truly affordable Focus generation. £3k-£8k. Best value in the market for a sub-£5k family hatch.

Mk3.5 facelift (2014+) — Improved interior, SYNC2 infotainment. Worth the small price premium.

Mk4 (2018-present) — Bigger jump. Much-improved interior, SYNC3 (then SYNC4 from 2022), available as mild hybrid. £10k-£20k typical.

If your budget is under £7k, look at Mk3.5 with 60-80k miles. If you can stretch to £12k+, go Mk4.

Common faults to watch for

1.0 EcoBoost (Mk3) — Watch for coolant loss. Cylinder head cracking on early units (pre-2017) was a known issue. Check coolant level frequently before buying.

1.5 EcoBoost (Mk3.5) — Generally reliable but timing belt is wet (in oil). Belt change required earlier than expected (60k miles).

1.5 TDCi (Mk3) — DPF issues on town-only use. Common.

PowerShift dual-clutch (Mk3 only) — AVOID. Replaced by manual on Mk4 for good reason. Class actions in US, UK had similar issues. Walk away from any PowerShift car.

Mk4 SYNC3 freezing — Software updates fix most. Check infotainment responds before buying.

Fair UK Focus prices by year

2013 (Mk3 1.0 EcoBoost Zetec, 80k miles): £3,500 - £4,400
2015 (Mk3.5 1.5 TDCi Titanium, 70k): £5,500 - £6,800
2018 (Mk4 1.0 EcoBoost ST-Line, 50k): £10,500 - £12,500
2020 (Mk4 1.0 EcoBoost MHEV, 35k): £13,000 - £15,000
2022 (Mk4 ST petrol, 25k): £20,000 - £23,500

Inspection checklist for a used Focus

Cold-start the engine — Mk3 1.0 EcoBoost: watch for rough idle. Should be smooth within 5 seconds.

Coolant check — Critical on 1.0 EcoBoost. Should be at MAX line, no oil contamination.

If it's a PowerShift — walk away. No exceptions.

Check the rear suspension — Mk3 rear axles often have advisories. Look at MOT history for any 'rear axle' or 'subframe' notes.

Full checklist: how to check a used car before buying.

Ford Focus vs alternatives

vs Vauxhall Astra — Astra has better residuals lately, but Focus has better dynamics.

vs VW Golf — Golf is more expensive new and used. Focus offers similar space for less.

vs Hyundai i30 — i30 has the warranty edge. Focus is more engaging to drive.

Frequently asked questions

Are Ford Focus expensive to repair?+
Service parts and labour cheaper than premium German rivals. Independent Ford mechanics widely available. Major faults (PowerShift, 1.0 EcoBoost coolant) can be expensive but are well-known.
Which is the best Focus engine?+
For petrol: 1.0 EcoBoost 125 (Mk3.5 onwards) or 1.5 EcoBoost on Mk4. For diesel: 1.5 TDCi 120 (Mk3.5) is the sweet spot. Avoid the 1.6 Ti-VCT — slow and not particularly economical.
Is the Ford Focus reliable?+
Generally good. Mk3 with the 1.0 EcoBoost requires the coolant check ritual. Mk4 reliability has been very good. PowerShift gearboxes (Mk3 only) are the main risk.
What size insurance group is the Focus?+
Group 9 (1.0 EcoBoost Zetec Mk3) to Group 35 (Focus RS Mk3). Most common spec — 1.0 EcoBoost Titanium — is group 13.
What about the Ford Focus ST?+
The 250bhp Mk4 ST is excellent value at £14-£18k for a 2019-2020 car. Watch for tracked/modified examples. The 1.5 EcoBoost ST is rare in the UK — most ST 2020+ are the 2.3 EcoBoost.