My apologies and stand corrected. True, driving with an expired driver's license is an offense that can carry time in jail. It's still a criminal misdemeanor and doesn't change the fact that your adversary cannot ethically provide you any advice on whether you should obtain the services of an attorney. There is absolutely no legitimate way you can expect the district attorney's office to guarantee you that you're getting the "best outcome possible so you don't need an attorney." It's unfair to other citizens on its face and everyone in your situation would need to be guaranteed the same deal.
Here is what you face - and it is serious. While you may be able to get what is usually provided to other drivers in your position, I can tell you from experience that most prosecutors I've faced may lean more towards doing what they can for those already "punished" by having to pay for an attorney. Some might view it as both keeping attorneys working and also appreciating that the expenditure for what is highly recommended legal representation is significantly impacting financially upon most criminal defendants. Given the penalties below, this doesn't seem something that you'd want to handle yourself. Good luck.
Illinois Compiled Statutes 625 ILCS 5/6-101
Sec. 6-101. Drivers must have licenses or permits.
(a) No person, except those expressly exempted by Section 6-102, shall drive any motor vehicle upon a highway in this State unless such person has a valid license or permit, or a restricted driving permit, issued under the provisions of this Act.
(b) No person shall drive a motor vehicle unless he holds a valid license or permit, or a restricted driving permit issued under the provisions of Section 6-205, 6-206, or 6-113 of this Act. Any person to whom a license is issued under the provisions of this Act must surrender to the Secretary of State all valid licenses or permits, except that an applicant for a non-domiciled commercial learner's permit or commercial driver's license shall not be required to surrender a license or permit issued by the applicant's state or country of domicile. No drivers license or instruction permit shall be issued to any person who holds a valid Foreign State license, identification card, or permit unless such person first surrenders to the Secretary of State any such valid Foreign State license, identification card, or permit.
(b-5) Any person who commits a violation of subsection (a) or (b) of this Section is guilty of a Class A misdemeanor, if at the time of the violation the person's driver's license or permit was cancelled under clause (a)9 of Section 6-201 of this Code.
(c) Any person licensed as a driver hereunder shall not be required by any city, village, incorporated town or other municipal corporation to obtain any other license to exercise the privilege thereby granted.
Illinois Compiled Statutes 730 ILCS 5/5-4.5-55
Sec. 5-4.5-55. CLASS A MISDEMEANORS; SENTENCE. For a Class A misdemeanor:
(a) TERM. The sentence of imprisonment shall be a determinate sentence of less than one year.
(b) PERIODIC IMPRISONMENT. A sentence of periodic imprisonment shall be for a definite term of less than one year, except as otherwise provided in Section 5-5-3 or 5-7-1 (730 ILCS 5/5-5-3 or 5/5-7-1).
(c) IMPACT INCARCERATION. See Section 5-8-1.2 (730 ILCS 5/5-8-1.2) concerning eligibility for the county impact incarceration program.
(d) PROBATION; CONDITIONAL DISCHARGE. Except as provided in Section 5-5-3 or 5-6-2 (730 ILCS 5/5-5-3 or 5/5-6-2), the period of probation or conditional discharge shall not exceed 2 years. The court shall specify the conditions of probation or conditional discharge as set forth in Section 5-6-3 (730 ILCS 5/5-6-3).
(e) FINE. A fine not to exceed $2,500 for each offense or the amount specified in the offense, whichever is greater, may be imposed. A fine may be imposed in addition to a sentence of conditional discharge, probation, periodic imprisonment, or imprisonment. See Article 9 of Chapter V (730 ILCS 5/Ch. V, Art. 9) for imposition of additional amounts and determination of amounts and payment.
(f) RESTITUTION. See Section 5-5-6 (730 ILCS 5/5-5-6) concerning restitution.
(g) CONCURRENT OR CONSECUTIVE SENTENCE. The sentence shall be concurrent or consecutive as provided in Section 5-8-4 (730 ILCS 5/5-8-4).
(h) DRUG COURT. See Section 20 of the Drug Court Treatment Act (730 ILCS 166/20) concerning eligibility for a drug court program.
(i) CREDIT FOR HOME DETENTION. See Section 5-4.5-100 (730 ILCS 5/5-4.5-100) concerning credit for time spent in home detention prior to judgment.
(j) GOOD BEHAVIOR ALLOWANCE. See the County Jail Good Behavior Allowance Act (730 ILCS 130/) for rules and regulations for good behavior allowance.
(k) ELECTRONIC HOME DETENTION. See Section 5-8A-3 (730 ILCS 5/5-8A-3) concerning eligibility for electronic home detention.