OPINION
NIGRO, Justice.
The issue presented in the instant appeal is whether the Superior Court properly determined that the sentencing court erred by finding that the New York State offense of Driving While Ability Impaired (“DWAI”), N.Y. Veh. & Traf, Law § 1192(1), is an “equivalent offense” to the Pennsylvania offense of Driving While Under the Influence of Alcohol (“DUI”), 75 Pa.C.S. § 3731(a)(1), for purposes of sentencing Appellee as a repeat offender pursuant to 75 Pa.C.S. § 3731(e)(l)(iii). For the reasons that follow, we affirm the order of the Superior Court vacating Appellee’s judgment of sentence and remanding the matter for resentencing.
The facts and procedural history underlying the instant appeal are as follows. On April 14, 1995, various residents of the Kerry view Trailer Park observed Appellee backing his car into a parked truck and driving around the park in an apparently intoxicated state. Police were called to the scene, and Appellee was arrested for DUI. On September 28, 1995, a jury convicted Appellee of DUI.1 After finding that Appellee’s latest conviction was his third DUI conviction for purposes of determining his appropriate mandatory minimum [300]*300sentence pursuant to 75 Pa.C.S. § 3731(e)(1),2 the sentencing court imposed a term of imprisonment of six to twenty-three months and twenty-nine days, plus a $1,000 fine, a $200 [301]*301statutory surcharge, and costs of prosecution. Appellee filed post-sentencing motions, which were denied. Appellee then filed a timely appeal to the Superior Court.
On appeal, Appellee challenged, inter alia, the sentencing court’s determination that his New York state conviction of DWAI should count as a prior DUI conviction for purposes of determining his mandatory minimum sentence pursuant to 75 Pa.C.S. § 3731(e)(1). The Superior Court agreed, finding that Pennsylvania’s DUI offense enumerated at 75 Pa.C.S. § 3731(a)(1) and New York State’s DWAI offense enumerated at N.Y. Veh. & Traf. Law § 1192(1) are not equivalents, because Pennsylvania’s DUI offense requires a greater showing of impairment than does New York State’s DWAI offense. Accordingly, the Superior Court concluded that the sentencing court should not have considered Appellee’s New York State DWAI conviction to be a prior offense for purposes of calculating Appellee’s mandatory minimum DUI sentence, vacated Appellee’s judgment of sentence and remanded the matter for resentencing in accordance with its memorandum opinion. The Commonwealth’s instant appeal followed.
The Commonwealth first argues that the Superior Court erred in reaching the issue of whether Appellee’s New York State DWAI conviction may constitute a prior conviction for purposes of determining his mandatory minimum sentence pursuant to 75 Pa.C.S. § 3731(e)(1), because Appellee failed to set forth in his brief to the Superior Court a statement of reasons relied upon for allowance of appeal of the discretionary aspects of his sentence. We disagree.
Pursuant to section 9781(b) of the Judicial Code, review of the discretionary aspects of a sentence is at the discretion of the Superior Court. See 42 Pa.C.S. § 9781(b). To facilitate the Superior Court’s exercise of this discretion, Rule 2119(f) of the Pennsylvania Rules of Appellate Procedure requires appellants seeking appellate review of the discretionary aspects of a sentence to include in their brief a separate statement of the reasons they rely upon for allowance of appeal. See Pa.R.A.P. 2119(f). From such a statement, “the [302]*302Superior Court decides whether to review the discretionary portions of a sentence based upon a determination that a substantial question concerning the sentence exists.” In the Interest of M.W., 555 Pa. 505, 725 A.2d 729, 731 (1999) (citing Commonwealth v. Tuladziecki, 513 Pa. 508, 513, 522 A.2d 17, 19 (1987)).
As noted by the Superior Court in its memorandum opinion, the issue raised by Appellee implicates the legality of his sentence, and not its discretionary aspects, since the sentencing court had no discretion in calculating the number of Appellee’s prior DUI convictions for purposes of determining his mandatory minimum sentence pursuant to 75 Pa.C.S. § 3731(e)(1). Therefore, Pa.R.A.P. 2119(f) is inapplicable to Appellee’s claim that the sentencing court erred in determining his mandatory minimum sentence, and the Superior Court did not err in reaching the merits of the issue. See 42 Pa.C.S. § 9781(a) (the defendant or the Commonwealth may appeal the legality of a sentence as of right); see also Commonwealth v. Robertson, Jr., 555 Pa. 72, 722 A.2d 1047 (1999) (implicitly finding question of whether sentencing court properly found that Maryland offense of driving while intoxicated constitutes an “equivalent offense” to the Pennsylvania offense of driving while under the influence of alcohol for purposes of determining defendant’s mandatory minimum sentence under 75 Pa. C.S. § 3731(e)(1) implicates legality of sentence, rather than its discretionary aspects, by reaching merits of the issue).
Next, the Commonwealth argues that the Superior Court erred in reaching the issue of whether Appellee’s New York State DWAI conviction may constitute a prior conviction for purposes of mandatory sentencing under 75 Pa.C.S. § 3731(e)(1), because by the time Appellee appealed to the Superior Court, he had already served his minimum term of incarceration. The Superior Court refused to find the issue moot since Appellee was still on parole during the time that his appeal was pending, and was therefore still subject to the sentence imposed on him. We find no error in the Superior Court’s determination in this regard. Therefore, we will now [303]*303address the substantive issue at hand, which is namely, whether the Superior Court erred in finding that the New York State offense of DWAI does not constitute an “equivalent offense” to the Pennsylvania offense of DUI for purposes of determining Appellant’s mandatory minimum sentence as a repeat offender pursuant to 75 Pa.C.S. § 3731(e)(1).3
In Commonwealth v. Robertson, Jr., 555 Pa. 72, 722 A.2d 1047 (1999), a plurality of this Court adopted the Superi- or Court’s approach to determining whether or not an out-of-state offense is “equivalent” to an in-state offense for purposes of determining whether a defendant was properly sentenced as a recidivist offender under the Pennsylvania DUI statute. In determining whether an in-state offense and an out-of-state offense are “equivalents”, the Superior Court has compared the elements of the crimes, the conduct prohibited by the offenses, and the underlying public policy behind the two criminal statutes. See, e.g., Commonwealth v. Bolden, 367 Pa.Super. 333, 532 A.2d 1172 (1987). As the Bolden court stated:
[A] sentencing court [must] carefully review the elements of the foreign offense in terms of classification of the conduct proscribed, its definition of the offense, and the requirements for culpability.
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OPINION
NIGRO, Justice.
The issue presented in the instant appeal is whether the Superior Court properly determined that the sentencing court erred by finding that the New York State offense of Driving While Ability Impaired (“DWAI”), N.Y. Veh. & Traf, Law § 1192(1), is an “equivalent offense” to the Pennsylvania offense of Driving While Under the Influence of Alcohol (“DUI”), 75 Pa.C.S. § 3731(a)(1), for purposes of sentencing Appellee as a repeat offender pursuant to 75 Pa.C.S. § 3731(e)(l)(iii). For the reasons that follow, we affirm the order of the Superior Court vacating Appellee’s judgment of sentence and remanding the matter for resentencing.
The facts and procedural history underlying the instant appeal are as follows. On April 14, 1995, various residents of the Kerry view Trailer Park observed Appellee backing his car into a parked truck and driving around the park in an apparently intoxicated state. Police were called to the scene, and Appellee was arrested for DUI. On September 28, 1995, a jury convicted Appellee of DUI.1 After finding that Appellee’s latest conviction was his third DUI conviction for purposes of determining his appropriate mandatory minimum [300]*300sentence pursuant to 75 Pa.C.S. § 3731(e)(1),2 the sentencing court imposed a term of imprisonment of six to twenty-three months and twenty-nine days, plus a $1,000 fine, a $200 [301]*301statutory surcharge, and costs of prosecution. Appellee filed post-sentencing motions, which were denied. Appellee then filed a timely appeal to the Superior Court.
On appeal, Appellee challenged, inter alia, the sentencing court’s determination that his New York state conviction of DWAI should count as a prior DUI conviction for purposes of determining his mandatory minimum sentence pursuant to 75 Pa.C.S. § 3731(e)(1). The Superior Court agreed, finding that Pennsylvania’s DUI offense enumerated at 75 Pa.C.S. § 3731(a)(1) and New York State’s DWAI offense enumerated at N.Y. Veh. & Traf. Law § 1192(1) are not equivalents, because Pennsylvania’s DUI offense requires a greater showing of impairment than does New York State’s DWAI offense. Accordingly, the Superior Court concluded that the sentencing court should not have considered Appellee’s New York State DWAI conviction to be a prior offense for purposes of calculating Appellee’s mandatory minimum DUI sentence, vacated Appellee’s judgment of sentence and remanded the matter for resentencing in accordance with its memorandum opinion. The Commonwealth’s instant appeal followed.
The Commonwealth first argues that the Superior Court erred in reaching the issue of whether Appellee’s New York State DWAI conviction may constitute a prior conviction for purposes of determining his mandatory minimum sentence pursuant to 75 Pa.C.S. § 3731(e)(1), because Appellee failed to set forth in his brief to the Superior Court a statement of reasons relied upon for allowance of appeal of the discretionary aspects of his sentence. We disagree.
Pursuant to section 9781(b) of the Judicial Code, review of the discretionary aspects of a sentence is at the discretion of the Superior Court. See 42 Pa.C.S. § 9781(b). To facilitate the Superior Court’s exercise of this discretion, Rule 2119(f) of the Pennsylvania Rules of Appellate Procedure requires appellants seeking appellate review of the discretionary aspects of a sentence to include in their brief a separate statement of the reasons they rely upon for allowance of appeal. See Pa.R.A.P. 2119(f). From such a statement, “the [302]*302Superior Court decides whether to review the discretionary portions of a sentence based upon a determination that a substantial question concerning the sentence exists.” In the Interest of M.W., 555 Pa. 505, 725 A.2d 729, 731 (1999) (citing Commonwealth v. Tuladziecki, 513 Pa. 508, 513, 522 A.2d 17, 19 (1987)).
As noted by the Superior Court in its memorandum opinion, the issue raised by Appellee implicates the legality of his sentence, and not its discretionary aspects, since the sentencing court had no discretion in calculating the number of Appellee’s prior DUI convictions for purposes of determining his mandatory minimum sentence pursuant to 75 Pa.C.S. § 3731(e)(1). Therefore, Pa.R.A.P. 2119(f) is inapplicable to Appellee’s claim that the sentencing court erred in determining his mandatory minimum sentence, and the Superior Court did not err in reaching the merits of the issue. See 42 Pa.C.S. § 9781(a) (the defendant or the Commonwealth may appeal the legality of a sentence as of right); see also Commonwealth v. Robertson, Jr., 555 Pa. 72, 722 A.2d 1047 (1999) (implicitly finding question of whether sentencing court properly found that Maryland offense of driving while intoxicated constitutes an “equivalent offense” to the Pennsylvania offense of driving while under the influence of alcohol for purposes of determining defendant’s mandatory minimum sentence under 75 Pa. C.S. § 3731(e)(1) implicates legality of sentence, rather than its discretionary aspects, by reaching merits of the issue).
Next, the Commonwealth argues that the Superior Court erred in reaching the issue of whether Appellee’s New York State DWAI conviction may constitute a prior conviction for purposes of mandatory sentencing under 75 Pa.C.S. § 3731(e)(1), because by the time Appellee appealed to the Superior Court, he had already served his minimum term of incarceration. The Superior Court refused to find the issue moot since Appellee was still on parole during the time that his appeal was pending, and was therefore still subject to the sentence imposed on him. We find no error in the Superior Court’s determination in this regard. Therefore, we will now [303]*303address the substantive issue at hand, which is namely, whether the Superior Court erred in finding that the New York State offense of DWAI does not constitute an “equivalent offense” to the Pennsylvania offense of DUI for purposes of determining Appellant’s mandatory minimum sentence as a repeat offender pursuant to 75 Pa.C.S. § 3731(e)(1).3
In Commonwealth v. Robertson, Jr., 555 Pa. 72, 722 A.2d 1047 (1999), a plurality of this Court adopted the Superi- or Court’s approach to determining whether or not an out-of-state offense is “equivalent” to an in-state offense for purposes of determining whether a defendant was properly sentenced as a recidivist offender under the Pennsylvania DUI statute. In determining whether an in-state offense and an out-of-state offense are “equivalents”, the Superior Court has compared the elements of the crimes, the conduct prohibited by the offenses, and the underlying public policy behind the two criminal statutes. See, e.g., Commonwealth v. Bolden, 367 Pa.Super. 333, 532 A.2d 1172 (1987). As the Bolden court stated:
[A] sentencing court [must] carefully review the elements of the foreign offense in terms of classification of the conduct proscribed, its definition of the offense, and the requirements for culpability. Accordingly, the court may want to discern whether the crime is malum in se or malum prohibitum, or whether the crime is inchoate or specific. If it is a specific crime, the court may look to the subject [304]*304matter sought to be protected by the statute, e.g., protection of the person or protection of the property. It will also be necessary to examine the definition of the conduct or activity proscribed. In doing so, the court should identify the requisite elements of the crime — the actus reus and mens rea — which form the basis of liability.
Having identified these elements of the foreign offense, the court should next turn its attention to the Pennsylvania Crimes Code for the purpose of determining the equivalent Pennsylvania offense. An equivalent offense is that which is substantially identical in nature and definition [to] the out-of-state or federal offense when compared [to the] Pennsylvania offense.
Id., 367 Pa.Super. at 338-39, 532 A.2d at 1175-76.
Today, this Court formally adopts the Superior Court’s approach to determining whether in-state and out-of-state offenses are “equivalents”, and apply that approach in determining whether Appellee was properly sentenced as a repeat offender pursuant to 75 Pa.C.S. § 3731(e)(1).
New York State’s drunk driving statute, N.Y. Veh. & Traf. Law § 1192, provides, in pertinent part, as follows:
§ 1192 Operating a motor vehicle while under the influence of alcohol or drugs
1. Driving while ability impaired. No person shall operate a motor vehicle while the person’s ability to operate such motor vehicle is impaired by the consumption of alcohol.
2. Driving while intoxicated; per se. No person shall operate a motor vehicle while such person has .10 of one per centum or more by weight of alcohol in the person’s blood as shown by chemical analysis of such person’s blood, breath, urine or saliva, made pursuant to the provisions of section eleven hundred ninety-four of this article.
3. Driving while intoxicated. No person shall operate a motor vehicle while in an intoxicated condition.
N.Y. Veh. & Traf. Law § 1192(l)-(3).
Pennsylvania’s drunk driving statute, 75 Pa.C.S. § 3731, provides, in pertinent part, as follows:
[305]*305(a) Offense defined — A person shall not drive, operate or be in actual physical control of the movement of a vehicle in any of the following circumstances:
(1) While under the influence of alcohol to a degree which renders the person incapable of safe driving.
(2) While under the influence of any controlled substance, as defined in the act of April 14, 1972 (P.L. 233, No. 64), known as The Controlled Substance, Drug, Device and Cosmetic Act, to a degree which renders the person incapable of safe driving;
(3) While under the combined influence of alcohol and any controlled substance to a degree which renders the person incapable of safe driving;
(4) While the amount of alcohol by weight in the blood of
(i) an adult is 0.10% or greater; or
(ii) a minor is 0.02% or greater.
75 Pa.C.S. § 3731(a)(l)-(4).
In the instant case, the Superior Court found that the elements of New York State’s DWAI offense and Pennsylvania’s DUI offense are too distinct to support a finding that they are “equivalent offenses” for purposes of determining Appellee’s mandatory minimum sentence under 75 Pa.C.S. § 3731(e)(1). The Commonwealth argues that this finding was in error, because impairment is the key to both New York State’s DWAI offense and Pennsylvania’s DUI offense. However, in making this argument, the Commonwealth ignores the fact that New York State’s DWAI offense requires an appreciably lesser degree of impairment than does Pennsylvania’s DUI offense.
As this Court recently noted in Petrovick v. Commonwealth of Pennsylvania, Dep’t of Trans., Bureau of Driver Licensing, 559 Pa. 614, 741 A.2d 1264 (1999), in order to obtain a DUI conviction under 75 Pa.C.S. § 3731(a)(1), the prosecution must prove that the defendant was in actual physical control of a vehicle while under the influence of alcohol to a degree that rendered his faculties substantially impaired, which is synonymous with the rendering him incapable of safe driving. Id. at [306]*3061266. In contrast, in order to obtain a DWAI conviction under N.Y. Veh. & Traf. Law § 1192(1), the prosecution need only prove that the defendant, “by voluntarily consuming alcohol, ... actually impaired, to any extent, the physical and mental abilities which he is expected to possess in order to operate a vehicle as a reasonable and prudent driver.” People v. Cruz, 48 N.Y.2d 419, 427, 423 N.Y.S.2d 625, 399 N.E.2d 513, 516 (1979).
It logically follows that although both Pennsylvania’s DUI offense and New York State’s DWAI offense are designed to protect the person and prohibit drunk driving, New York State’s DWAI offense protects the public from a broader range of reckless behavior than does Pennsylvania’s DUI offense. This is due to the fact that New York State’s DWAI offense casts a wider net of criminal liability, making it criminal for individuals to drink to the point of any impairment and then proceed to operate a motor vehicle, while Pennsylvania’s DUI offense only makes it criminal for individuals to drink to the point of substantial impairment and then proceed to operate a motor vehicle.4 Thus, there is an appre[307]*307ciable difference in the elements of the in-state and out-of-state offenses at issue, and a corresponding difference in the conduct prohibited by the offenses which preclude a finding that the offenses are “equivalents”.
Based on the foregoing, we conclude that the Superior Court properly found that N.Y. Veh. & Traf. Law § 1192(1) is not “equivalent” to 75 Pa.C.S. § 3731(a)(1) for purposes of determining whether Appellee was a two-time repeat offender, and therefore subject to the 90 day mandatory minimum sentencing provision set forth at 75 Pa.C.S. § 3731(e)(l)(iii). Accordingly, we affirm the order of the Superior Court vacating Appellee’s judgment of sentence and remanding the matter for resentencing.
Justice GAPPY files a concurring opinion in which Justices ZAPPALA and SAYLOR join.