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Ford Focus ST-Line insurance cost UK 2026

Ford Focus ST-Line insurance costs around £865 a year on comprehensive cover in 2026, and the ST-Line family sits in insurance groups 11–20 depending on engine and sub-trim. Crucially, the ST-Line is a styling pack, not a performance model — it shares its engines with the standard Focus, so it costs only around £95 a year more to insure than a Focus Titanium (~£770) and dramatically less than the genuine Focus ST (groups 27–34). The cheapest way in is the 1.0 EcoBoost 125, rated as low as groups 11–13. Engine-by-engine groups, a cost-by-age table and saving tactics below — or see the full Ford Focus insurance guide for every trim from Zetec to RS.

See costs by age → Full Ford Focus guide
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Groups 11-20
Thatcham range across the ST-Line family
~£865/yr
ST-Line X average premium, comprehensive
+£95 vs base
vs Focus Titanium ~£770; UK all-car avg ~£600
Direct Answer

Why does Focus ST-Line insurance cost what it does?

The ST-Line is Ford’s sports-styling trim — the bodykit, rear spoiler, sports suspension and bigger alloys of the Focus ST without the ST’s 280PS engine. That single fact drives everything about how it is priced. Insurers rate cars on the Thatcham 1–50 group scale using new-car value, performance and repair cost, and because the ST-Line uses the same 1.0 and 1.5-litre engines as an ordinary Focus, it lands in groups 11–20 — nowhere near the true ST’s groups 27–34.

Three structural factors set its position. First, the engine range is mainstream: a 1.0 EcoBoost 125 ST-Line is group 12–13, essentially the same risk as a Zetec. Second, the cosmetic kit raises repair bills: unique front and rear bumpers, side skirts, the honeycomb grille and 17–18in alloys all cost more to replace than standard-Focus parts, which is why an ST-Line typically sits 2–5 groups above an equivalent-engine Titanium and adds roughly £50–£100 a year. Third, spec creep at the top: the ST-Line X with the 155PS mild-hybrid engine carries more equipment and a higher list price, pushing it to groups 18–20 and the ~£865 headline premium.

One more thing worth knowing in 2026: Ford ended Focus production in November 2025, so every ST-Line is now a used-market car. Gently falling values nudge premiums down over time, while Ford’s commitment to parts supply keeps repair economics — and therefore group ratings — stable.

Groups By Engine

Focus ST-Line insurance groups, engine by engine

Within the ST-Line family (ST-Line, ST-Line Edition, ST-Line X, ST-Line Vignale) the insurance group is set almost entirely by the engine and the sub-trim’s equipment level. Thatcham/Parkers ratings for the Mk4 (2018–2025) hatchback:

ST-Line variant / engineInsurance groupEst. annual premium (35–49)
ST-Line Edition 1.0 EcoBoost 125 auto11£680
ST-Line 1.0 EcoBoost 12512–13£700
ST-Line 1.5 EcoBlue 120 diesel14–15£760
ST-Line 1.0 EcoBoost mHEV 15516–17£820
ST-Line X 1.5 EcoBoost 182 (2018–21)17£830
ST-Line X 1.0 EcoBoost mHEV 15518–20£865

Groups: Thatcham Group Rating Panel determinations as published by Parkers (Focus hatchback 2018-on). Premiums: Car Insurance Expert estimates for a 35–49-year-old with 5 years’ no-claims, benchmarked to NimbleFins and Confused.com 2026 quote data. Estate versions typically rate 1 group higher.

Cost By Age

Ford Focus ST-Line insurance cost by driver age

Driver age moves the premium far more than the trim does. The table below shows typical 2026 comprehensive premiums for the two most common ST-Line configurations — the entry 1.0 EcoBoost 125 (group 12–13) and the top-selling ST-Line X mHEV 155 (group 18–20):

Ford Focus ST-Line X insurance cost by driver age — UK 2026
A 21–24 driver pays nearly three times the 50–69 rate on the same ST-Line X mHEV 155.
21–24 years£2,140 25–34 years£1,190 35–49 years£865 50–69 years£730 70+ years£845

Source: Car Insurance Expert estimates benchmarked to ABI 2026 Motor Insurance Premium Tracker (~£600 UK average), Confused.com Price Index 2026 (~£711 quote average) and NimbleFins 2026 Focus benchmarks (~£770); Thatcham group ratings via Parkers.

Driver ageST-Line 1.0 125 (grp 12–13)ST-Line X mHEV 155 (grp 18–20)
21–24 years£1,700£2,140
25–34 years£950£1,190
35–49 years (UK avg driver)£700£865
50–69 years£590£730
70+ years£685£845

Comprehensive cover, 5 years’ no-claims, car kept on a driveway, ~8,000 miles/year. London adds approximately 18–23% to all figures; Manchester / Birmingham approximately +10–14%. For context, the same profile on a Focus Titanium averages £770 and the true Focus ST £1,090+ — see the full Ford Focus insurance guide and the UK Car Insurance Cost Index.

Pay Less

Cheaper to insure alternatives — and how to cut the ST-Line premium

If the look matters more than the badge on the bootlid, the cheapest move is within the range: choose the ST-Line 1.0 EcoBoost 125 (group 12–13, ~£700) over the ST-Line X mHEV 155 (group 18–20, ~£865) and you keep the styling while saving roughly £165 a year — and around £440 a year at ages 21–24. A standard Focus Titanium (groups 8–17) or Fiesta ST-Line (smaller car, lower groups) undercuts it further, as do mainstream rivals like the VW Golf Life and Vauxhall Astra GS in comparable spec.

On the ST-Line itself, six tactics reliably cut the premium:

  • Telematics under 25 — the ABI puts the average black-box saving for young drivers at ~£379/year, which turns a £2,140 quote into the £1,700s.
  • Raise the voluntary excess — moving from £250 to £500 typically trims 8–12% off a Focus-class premium.
  • Declare mileage accurately — the default 10,000-mile assumption overprices most 6–8k/year commuters.
  • Pay annually — monthly instalments on UK motor policies carry APRs of 20–30%.
  • Keep it factory-standard — the ST-Line kit itself is not a modification, but aftermarket spoilers, tints or remaps push a styling-pack car towards performance-car pricing.
  • Compare at 21–26 days before renewal — quote-index data consistently shows this window pricing lowest.
Common Questions

Ford Focus ST-Line insurance FAQs

The ST-Line family spans insurance groups 11–20 on the Thatcham 1–50 scale, set mainly by engine: the 1.0 EcoBoost 125 sits in groups 12–13, the 1.5 EcoBlue diesel in 14–15, the 1.0 mHEV 155 in 16–17, and the ST-Line X mHEV 155 as high as group 20. That compares with groups 8–17 for standard Focus trims and 27–34 for the genuine Focus ST.
Slightly. Engine-for-engine an ST-Line rates 2–5 groups above a Titanium because its unique bumpers, skirts and larger alloys cost more to repair — worth roughly £50–£100 a year for a mid-life driver. In 2026 the average Focus premium is about £770 against ~£865 for an ST-Line X.
No. The ST-Line is a factory styling pack using standard Focus engines, so insurers rate it on ordinary value, power and repair-cost measures. The performance model is the Focus ST (2.3 EcoBoost 280PS, groups 27–34), which costs roughly £225+ a year more to insure than an ST-Line X for the same driver.
A 21–24-year-old typically pays around £2,140 a year comprehensive on an ST-Line X mHEV 155, or nearer £1,700 on the group 12–13 ST-Line 1.0 EcoBoost 125. A telematics (black box) policy cuts an average of ~£379 off young-driver premiums according to the ABI, so the entry engine plus a box is the realistic route under 25.
The 1.0 EcoBoost 125 — groups 12–13 (and as low as group 11 in ST-Line Edition automatic form), averaging £680–£700 a year for a 35–49-year-old. The most expensive is the ST-Line X 1.0 mHEV 155 in groups 18–20 at ~£865.
Yes, by around 2–3 groups for the same engine. The X adds 18in alloys, part-leather trim, the B&O stereo and a higher list price, which lifts the mHEV 155 from groups 16–17 to 18–20 — worth roughly £30–£60 a year for a typical driver.
No — the bodykit, spoiler, sports suspension and alloys are factory-fitted standard equipment for the trim and are already priced into its group rating. Anything added afterwards (aftermarket spoiler, lowering springs, remap, tints) is a modification and must be declared, or you risk invalidating the policy.
Pick the 1.0 EcoBoost 125 engine (saves ~£165/year over the mHEV 155 X), take a black box if you are under 25, raise the voluntary excess, declare accurate mileage, pay annually rather than monthly, keep the car factory-standard and compare quotes 21–26 days before renewal. Together these routinely bring an ST-Line premium below the standard-Focus average.

Our sources

  • Thatcham Research / Group Rating Panel — Focus ST-Line group determinations (ST-Line 12–18, ST-Line X 13–20, ST-Line Edition 11–19), as published by Parkers for the 2018-on hatchback
  • ABI 2026 Motor Insurance Premium Tracker — ~£600 UK comprehensive average and the ~£379 average black-box saving for young drivers
  • Confused.com Car Insurance Price Index 2026 — ~£711 quote-based UK average and regional spread
  • NimbleFins UK Car Insurance Cost Tracker 2026 — mainstream-insurer Ford Focus quote benchmarks (~£770 Focus average)
  • Ford UK — ST-Line trim and engine specification reference; Focus production end (November 2025)
  • Finder UK Ford Focus insurance group guide — trim-level price-spread data

Reviewed by the Car Insurance Expert editorial team

Premium figures on this page are editorial estimates for a defined driver profile, benchmarked quarterly against ABI, Confused.com and NimbleFins published data; group ratings are checked against the current Group Rating Panel determinations at each refresh. We do not accept payment for editorial placement.

Last updated: 2026-07-28

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