2006 Cadillac SRX Gas Tank Size & Fuel Capacity
Fuel tank capacity
20.0gal · 76 L
The 2006 Cadillac SRX has a fuel tank capacity of 20.0 gallons (76 liters) on every trim.
A full tank is good for roughly 400–420 highway miles or 260–300 miles around town, going by the EPA ratings.
20.0 gal · Bigger than 54% of 2006 models we list.
- By trim
- Gas cap & parts
- Fuel essentials
- Miles per tank
- Fill-up cost
- Other years
- Compared
- Fuel recalls
- Pump & gauge parts
- FAQ
2006 Cadillac SRX fuel tank capacity by trim
What changes the tank sizeTap an option to filter the table
- Engine
- no difference
All 2 trims
MPG and range are city / highway.
| Trim | Engine | Drive | Tank | MPG city / hwy | Range city / hwy | |
|---|---|---|---|---|---|---|
| 4dr SUV 3.6L 6cyl 5A · RWD MPG 15 / 21Range 300 / 420 mi | 3.6L 6cyl 5A | RWD | 20.0 gal76 L | 15 / 21 | 300 / 420 mi | |
| 4dr SUV 4.6L 8cyl 5A · RWD MPG 13 / 20Range 260 / 400 mi | 4.6L 8cyl 5A | RWD | 20.0 gal76 L | 13 / 20 | 260 / 400 mi | |
| No trim matches all of these filters. | ||||||
Tank figures are the manufacturer's rated capacity, sorted smallest tank first. Range is tank size times EPA city or highway MPG.
How far a 2006 Cadillac SRX goes on a tank
Gallons left and the distance they cover at each mark on the fuel gauge, at EPA city and highway mileage. At the combined rating of 17 MPG, a full 20.0-gallon tank covers about 340 miles.
| Gauge | Gallons | Highway miles | City miles |
|---|---|---|---|
| Full | 20.0 | 420 | 300 |
| 3/4 | 15.0 | 315 | 225 |
| 1/2 | 10.0 | 210 | 150 |
| 1/4 | 5.0 | 105 | 75 |
| 1/8 | 2.5 | 53 | 38 |
Over 15,000 miles a year (the EPA's yearly estimate) this configuration uses about 882 gallons, roughly 44 full tanks.
Fuel gauges aren't perfectly linear and the low-fuel light comes on with a few gallons still in the tank, so plan your stop before the last eighth.
- EPA combined
- 16–17 MPG
- Tailpipe CO2
- 523–555 g/mi
- Source
- EPA ratings
What it costs to fill up a 2006 Cadillac SRX
$85.40 to fill the 20.0-gallon tank from empty with regular, at this week's US average of $4.27 a gallon.
| Tank | Fuel | US avg / gal | From empty | From 1/4 tank |
|---|---|---|---|---|
| 20.0 gal | Regular | $4.27 | $85.40 | $64.05 |
By region, 20.0-gallon tank
| Region | Regular / gal | Fill from empty |
|---|---|---|
| East Coast | $4.02 | $80.40 |
| Midwest | $4.27 | $85.40 |
| Gulf CoastLowest | $3.70 | $74.00 |
| Rocky Mountain | $4.46 | $89.20 |
| West Coast | $5.42 | $108.40 |
| CaliforniaHighest | $5.89 | $117.80 |
Prices: U.S. Energy Information Administration retail averages for the week of October 26, 2026. This week's prices by state and city.
Your own price
- 20.0-gallon tank$85.40
- A year of driving (15,000 mi)$3,768
Starts at the US average for regular; type in what your station charges. For other tank sizes, use the fill-up calculator.
SRX tank size in other years
The 2006 SRX uses the same 20.0 gal tank as every SRX since 2004.
| Model year | Tank | Longest highway range |
|---|---|---|
| 2011 SRX | 21.0 gal | 525 mi |
| 2010 SRX | 21.0 gal | 525 mi |
| 2009 SRX | 20.0 gal | 460 mi |
| 2008 SRX | 20.0 gal | 440 mi |
| 2007 SRX | 20.0 gal | 440 mi |
| 2006 SRX | 20.0 gal | 420 mi |
| 2005 SRX | 20.0 gal | 440 mi |
| 2004 SRX | 20.0 gal | 420 mi |
2006 Cadillac SRX vs similar 2006 SUVs
At 20.0 gallons, the SRX's largest tank ranks sixth of the seven 2006 SUVs compared here. The INFINITI FX35 carries the most (23.8 gal) and the Lexus RX 330 the least (19.2 gal).
| 2006 model | Tank | Longest highway range |
|---|---|---|
| INFINITI FX35 | 23.8 gal | 524 mi |
| HUMMER H3 | 23.0 gal | 414 mi |
| Saab 9-7X | 22.0 gal | 440 mi |
| Volvo XC90 | 21.1 gal | 443 mi |
| Acura MDX | 20.4 gal | 428 mi |
| Cadillac SRX | 20.0 gal | 420 mi |
| Lexus RX 330 | 19.2 gal | 442 mi |
Other 2006 SUVs of a similar size, one model per brand.
2006 Cadillac SRX fuel system recalls
None of the 3 recalls NHTSA lists for the 2006 Cadillac SRX involve the fuel system.
2006 Cadillac SRX fuel pump and gauge parts
NHTSA lists no fuel-system recall for the 2006 Cadillac SRX, so a failed pump or gauge is a normal repair. These are the part numbers the makers list for it.
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Frequently asked questions
What is the fuel tank capacity of the 2006 Cadillac SRX?
The 2006 Cadillac SRX holds 20.0 gallons (76 liters) on every trim we list.
How many gallons and liters does the 2006 Cadillac SRX gas tank hold?
The 2006 Cadillac SRX tank holds 76 liters, or 20.0 gallons in US gallons.
How far can a 2006 Cadillac SRX go on a full tank?
About 400–420 miles on the highway and 260–300 miles in town, going from full to empty at its EPA ratings. Expect less in practice, since nobody runs the tank dry.
How many miles can a 2006 Cadillac SRX go on a quarter tank?
About 105 highway miles or 75 in town from the 20.0-gallon tank, which has roughly 5.0 gallons left at the quarter mark. Gauges aren't exact, so treat that as a guide.
What gas does the 2006 Cadillac SRX take?
Regular unleaded. The label inside the fuel door confirms it for your car.
How much does it cost to fill up a 2006 Cadillac SRX?
At the US average of $4.27 a gallon for regular (EIA, week of October 26, 2026), filling the 20.0-gallon tank from empty costs $85.40. It ranges from $74.00 in the Gulf Coast to $117.80 in California.
How much does a full tank of gas weigh in a 2006 Cadillac SRX?
About 124 pounds for the 20.0-gallon tank. Gasoline weighs roughly 6.2 pounds a gallon.
Does the 2006 Cadillac SRX have a bigger gas tank than the INFINITI FX35?
No. The 2006 INFINITI FX35 holds up to 23.8 gallons; the 2006 Cadillac SRX holds up to 20.0.
Has the 2006 Cadillac SRX had a fuel pump or fuel system recall?
No. None of the 3 recalls NHTSA lists for the 2006 Cadillac SRX involve the fuel system.
Sources
- Tank sizes: manufacturer-rated capacities from US-market specifications, checked against independent references. Updated October 2026.
- MPG and range: EPA ratings (fueleconomy.gov). Range is tank size times EPA MPG.
- Fuel prices: U.S. Energy Information Administration, week of October 26, 2026 (this week's prices).
- Recalls: NHTSA recall database (Cadillac fuel system recalls).
Does your owner's manual say something different? Let us know and we'll fix it. More on how we check the numbers.