2026 Cadillac CT4 — Full Specifications
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The 2026 Cadillac CT4 is a saloon/sedan offered with 3 engines (2L 4-cyl turbo, 2.7L 4-cyl turbo, 3.6L 6-cyl turbo). Its most fuel-efficient configuration returns around 31 mpg (UK) / 26 mpg (US EPA) combined, with 22–31 mpg (UK) across all configurations. Owners often keep a Cadillac CT4 workshop manual to hand for servicing and repairs.
Compared with the 2025 Cadillac CT4: Fuel economy is essentially unchanged at around 31 mpg (UK) combined. The engine line-up listed by EPA is unchanged.
Full Specifications
| Engine (most efficient) | 2L 4-cyl turbo |
|---|---|
| Engine options | 2L 4-cyl turbo · 2.7L 4-cyl turbo · 3.6L 6-cyl turbo |
| Transmission (most efficient) | Automatic (S8) |
| Fuel Type | Premium Gasoline |
| Powertrain | Conventional |
| Drive | Rear-Wheel Drive |
| Body Style | Saloon/Sedan |
| Passenger Volume (EPA) | 90 cu ft (2,549 L) |
| Luggage Volume (EPA) | 11 cu ft (311 L) |
| Fuel Economy (UK) | 31 combined / 26 urban / 38 extra-urban mpg |
| Fuel Economy (US EPA) | 26 combined / 22 city / 32 highway mpg |
| CO₂ Emissions | 214 g/km |
| EPA Greenhouse Gas Score | 5 / 10 (10 = lowest emissions) |
| EPA Est. Annual Fuel Cost | $3,150 (15,000 mi/yr, US prices) |
Engine & Transmission Options
EPA lists 6 configurations for the 2026 Cadillac CT4 across 3 engines (2L 4-cyl turbo, 2.7L 4-cyl turbo, 3.6L 6-cyl turbo). Combined fuel economy ranges from 18 to 26 mpg (US), or 22 to 31 mpg (UK), depending on engine, transmission and drive. The headline figures at the top of this page describe the most fuel-efficient configuration.
| Engine | Transmission | Drive | MPG (UK) | MPG (US) | CO₂ g/km | Fuel cost / yr |
|---|---|---|---|---|---|---|
| 2L 4-cyl turbo | Automatic (S8) | All-Wheel Drive | 30 | 25 (21/31) | 222 | $3,300 |
| 2L 4-cyl turbo | Automatic (S8) | Rear-Wheel Drive | 31 | 26 (22/32) | 214 | $3,150 |
| 2.7L 4-cyl turbo | Automatic (S10) | All-Wheel Drive | 29 | 24 (21/29) | 231 | $3,400 |
| 2.7L 4-cyl turbo | Automatic (S10) | Rear-Wheel Drive | 30 | 25 (21/31) | 221 | $3,300 |
| 3.6L 6-cyl turbo | Automatic (S10) | Rear-Wheel Drive | 23 | 19 (16/24) | 297 | $4,350 |
| 3.6L 6-cyl turbo | Manual 6-spd | Rear-Wheel Drive | 22 | 18 (15/23) | 306 | $4,550 |
MPG (US) shows combined, with city/highway in brackets. Highlighted row = the configuration used for the headline figures. Source: US EPA fueleconomy.gov.
EPA measures interior passenger volume at 90 cubic feet (about 2,549 litres) and luggage volume at 11 cubic feet (about 311 litres). These are US EPA interior-volume figures; they are measured differently from the boot capacity numbers UK manufacturers quote.
Owner Essentials for the 2026 Cadillac CT4
Running Costs: 2026 Cadillac CT4
Covering around 8,000 miles a year in a 2026 Cadillac CT4 at 31 mpg combined, expect roughly 1,173 litres of fuel annually — multiply by your local price per litre for a cost estimate. For US owners, the EPA estimates about $3,150 a year in fuel for the most efficient configuration (15,000 miles, national average prices). Work out exact fuel costs with the fuel cost calculator on 247Calculators.
Convert between MPG and L/100km with the unit converters on 247QuickTools. Not sure what tyre size fits? 247TyreCheck explains tyre sizing.
Only need this car occasionally? See our buy vs rent comparison.
2026 Cadillac CT4 Safety Ratings (NHTSA)
No NHTSA crash-test rating is on record for this model year. The NHTSA rates only a subset of vehicles each year; you can browse every rated vehicle on our NHTSA Safety Ratings hub.
Recalls & Owner Complaints (NHTSA)
NHTSA lists no safety recall campaigns for the 2026 Cadillac CT4 as of 6 October 2026. Recalls can be issued years after a model is sold, so it is still worth checking your own VIN.
Owners have filed 1 complaint with NHTSA about the 2026 Cadillac CT4. The most-reported areas are Electrical system (1), Forward collision avoidance (1).
Used-buyer checklist for the 2026 Cadillac CT4
Based on where NHTSA recalls and owner complaints cluster for this model year, these are the areas worth checking before you buy:
- Electrical system (1 owner complaint) — Test every switch, window, light and warning lamp on a test drive, and ask about battery or alternator replacements.
- Driver-assist sensors (1 owner complaint) — Check that driver-assist warning lights are off and sensors are clean and undamaged.
Source: US NHTSA recall and consumer-complaint databases, retrieved 6 October 2026. Complaints are unverified owner reports, not confirmed defects. Check any vehicle by VIN at nhtsa.gov/recalls, and see our guide to checking a used car for recalls.
How It Compares
Cadillac models in our database average about 27 mpg (UK) combined on their most efficient configuration; the 2026 Cadillac CT4's 31 mpg is 4 mpg above that make average. Its 214 g/km CO₂ figure is 34 g/km lower than the 248 g/km Cadillac average.
Of the 7 Cadillac CT4 model years we cover, the 2026 ranks 5th for combined fuel economy on its best configuration (31 mpg UK combined, against a high of 32 mpg). See every Cadillac CT4 year side by side.
Last updated: · Data: US EPA (fueleconomy.gov) and NHTSA safety ratings 18 July 2026; NHTSA recalls and complaints 6 October 2026; Wikidata & curated EU catalogue 18 July 2026; European generation and engine data from Wikipedia 7 October 2026
Vehicle data sourced from manufacturer specifications. Always verify with your vehicle handbook or a qualified mechanic. This is a reference tool, not professional advice.
Recommended Accessories for the 2026 Cadillac CT4
Frequently Asked Questions
What engine does the 2026 Cadillac CT4 have?
EPA lists 3 engines for the 2026 Cadillac CT4: 2L 4-cyl turbo, 2.7L 4-cyl turbo, 3.6L 6-cyl turbo. The most fuel-efficient configuration pairs the 2L 4-cyl turbo with a automatic (s8).
What is the fuel economy of the 2026 Cadillac CT4?
The most efficient configuration returns around 31 mpg (UK) combined, or 26 mpg on the US EPA cycle. Across all configurations the UK combined figure runs from 22 to 31 mpg.
How much does the 2026 Cadillac CT4 cost to fuel per year?
The US EPA estimates about $3,150 a year in fuel for the most efficient configuration, based on 15,000 miles of mixed driving and national average fuel prices. Your own cost will depend on mileage and local prices.
Does the 2026 Cadillac CT4 have any recalls?
NHTSA lists no safety recall campaigns for the 2026 Cadillac CT4 as of 6 October 2026. Recalls can be issued years after a model is sold, so it is still worth checking your own VIN.
What are the most common problems reported for the 2026 Cadillac CT4?
Among the 1 owner complaints filed with NHTSA, the most-reported areas are Electrical system (1 complaint), Forward collision avoidance (1 complaint). Complaints are unverified owner reports, not confirmed defects, and raw counts rise with how many cars were sold.
How much interior and luggage space does the 2026 Cadillac CT4 have?
EPA measures interior passenger volume at 90 cubic feet (about 2,549 litres) and luggage volume at 11 cubic feet (about 311 litres). These are US EPA interior-volume figures, which are measured differently from the UK boot-capacity numbers manufacturers quote.